2021魔都新茶论坛

"The highest priority for the development of artificial intelligence (AI) technologies in China is not to create explosive applications, but to accelerate the development of industrial systems and the real economy," said Xiao Xinguang, a member of the National Committee of the Chinese People's Political Consultative Conference and chief software architect from Chinese cybersecurity company Antiy.

With the emergence of ChatGPT and Sora, the AI industry is accelerating its development, and human society is accelerating into the era of AI civilization. At the same time, the potential problems and uncertainties related to it may bring negative impacts and challenges to humanity. The security issues arising from it have also been put on the agenda.

"AI's extensive and deep empowerment in all industries and social fields is an inevitable trend in history. For the entire economic and social fields, there is only a difference between fast and slow, but no choice of whether to use it or not. Embracing AI may not necessarily mean success for various industries, but not embracing AI will definitely lead to elimination," Xiao told the Global Times.

Embracing AI requires a more open and collaborative mindset, said Xiao, noting that different departments have different focuses.

For example, the industrial sector needs to quickly follow up and apply AI to accelerate digitalization, intelligent upgrading, and transformation; however, government agencies should focus on how to better serve the people with AI, accelerate economic and social development, and also do well in risk control.

The field of cybersecurity, on the other hand, focuses on three major risks: the risks of AI technologies such as algorithms and data; application risks of platforms such as data leakage; and the risks of upgrading network attack capabilities under AI empowerment, Xiao said.

As a member of the national cybersecurity agency, Xiao described how he and his colleagues encounter cases of "AI-enhanced network attacks" in their daily work. "The graphic and textual content of phishing emails from some overseas attack organizations in the past two years are clearly generated by large model platforms. In cybercrime cases, deepfake technology has been frequently used."

According to Xiao, AI significantly empowers the entire attack chain. This includes, but is not limited to, efficiently exploiting software and hardware vulnerabilities and enhancing the organization of information intelligence. It also improves the exploration of attack entry points, the orchestration and automatic launching of attacks, and the writing of attack viruses. Additionally, AI enhances the ability to create highly targeted social engineering dialogues, deceiving network administrators and users, among other capabilities.

"We must pay attention to the challenges of content generation and deepfake for cognitive confrontation, and we must also conduct in-depth analysis and research on the deep empowerment of AI throughout the network attack process," Xiao said.

A thief crying "Stop thief"

The US has been the first to associate AI technology with the so-called "Chinese hackers" launching attacks on the US. In January, the FBI and US Justice Department used a court order to address vulnerabilities in thousands of internet-connected devices that are at the center of a so-called Chinese hacking campaign targeting sensitive US critical infrastructure, CNN reported.

In response, Xiao said the US continues to conduct network intrusions and intelligence activities in cyberspace to support its global hegemony system. By using its own behavior paradigm to judge others, the US was trying to shift its attack activities to China in order to muddy the waters in international diplomacy and public opinion.

The US reportedly has the most powerful global network attack engineering system, complete and continuously iterated network attack weapons and equipment, and the largest team of network attack personnel. Since the birth of the internet, the most long-term, covert, and severe network attacks and eavesdropping activities, such as Stuxnet, Flame, and Duqu, have all been initiated by the US.

"We have analyzed and disclosed the network attack activities of the US against other countries many times, including a detailed analysis and reconstruction of the attack process of the largest SWIFT service provider in the Middle East, EastNets, as well as a detailed exposure last year of the operation mechanism of the US attacking key personnel's phones and computers based on the 'quantum' system," Xiao said.

US intelligence agencies have long been concerned about the strengthening of AI capabilities in network attacks and the use of deepfake technology. It is necessary to pay close attention to the shaping of the US attack capabilities by super large model platforms, he noted.

Different paths

While smearing China for using AI technology for hacking attacks, the US is also actively downplaying China's AI technology development. In a report by CNBC on January 9, FBI Director Christopher Wray was quoted as saying "18 of the 20 most successful AI companies in the world are American." He then turned his focus to China, claiming that "You can bet your bottom dollar that foreign adversaries, especially the Chinese, are actively targeting that innovation, that intellectual property."

Xiao said that due to historical advantages and geopolitical factors, as well as long-term global dividends, the US has established a leading position in the global technology and industry. In order to solidify this leading advantage, the US government and capital groups have formed an inertia to suppress followers, especially by creating a false perception: "Whenever other countries show certain advantages in some fields, it must be the result of stealing American achievements." This is an extremely arrogant and deceptive rhetoric, Xiao said.

China's academic achievements in AI technologies have surged in recent years, with the number of top AI scholars ranking second globally. Universities and industries such as Tsinghua University and Harbin Institute of Technology have published high-level academic achievements in various subfields of AI. At the same time, scientific and technological development from basic theory to engineering implementation and application often follows a "convergence" path, so there will be a certain similarity in the basic path of technological innovation. Respecting the contributions of pioneers does not mean accepting that the first to develop can permanently monopolize, Xiao explained.

"The US has obtained more global dividends, gathered top talent resources worldwide, and naturally established a first-mover advantage in many fields; however, countries with strong self-development intentions, such as China, will also determine key development areas based on their own characteristics, relying on effective government organization, benign competition in the industry, and the diligence and unity of the people to make progress," Xiao stressed.

This cybersecurity expert believes China and the US will have certain differences in the development path of AI technologies. Information technology is the US' advantageous field, and through large-scale capital investment, it has established a large-scale intensive innovation model based on information complexes, forming a new strategic competitive capability. This system operates similarly to OpenAI+ChatGPT. The related experience is highly worthy of reference but difficult to completely imitate.

Currently, China has experienced a phenomenon of "one factory one model, a thousand-model battle with each other" in the development of general large models, which has brought about some resource waste and ineffective investment, affecting the aggregation of production factors. However, we should not be overly anxious. We are one of the few countries with all the elements to build a super large-scale general artificial intelligence platform. Our "formation" will be optimized and adjusted as we develop, Xiao said.

He noted that, at the same time, China has the most complete industrial system and a very solid foundation in the real economy. There is still a lot of room for improvement in automation, unmanned operation and intelligence. Our real industries cannot wait for the maturity of super large-scale general model platforms but must quickly gain AI empowerment and then iterate and improve. Therefore, the focus of China's AI development is still to accelerate the transition of the industrial system to new quality productivity and gain more benefits in the real industry.
Industrial development the highest priority

On February 12, NVIDIA CEO Jensen Huang said at the World Government Summit in Dubai that every country needs to own the production of their own intelligence to codify its culture while utilizing its economic potential.

In response, Xiao said that the development model of AI is highly related to the national industrial characteristics.

In the context of the hollowing out of industry due to profit-driven capital within the US, relying on information giants, capital power and rapid aggregation of talent, the best choice for the US is to establish a large-scale intensive innovation model in the field of large model platforms to form a new strategic competitive capability. On the other hand, China's overall industrial scale, completeness of the industrial system, and substantial real economy are globally leading. We have rich AI integration points and potential points in the industry and real economy, providing ample space for local innovation, he said.

However, China also needs to move from a fragmented small production model to an intensive large production model for AI platform construction. The country should gradually guide the formation of a super-scale general AI platform in terms of high-quality data sources, large-scale computing infrastructure, operational ecology, and organizational methods, supporting the industrial ecosystem, which is important for developing new quality productivity and strengthening national strategic security capabilities, Xiao noted.

Xiao added that it is also significant for building a community with shared future in cyberspace. The US government's suppression of China's high-tech industry development through a "small yard and high fence" strategy and the use of the so-called "table and menu theory" to force other countries to take sides is evident.

Especially in the field of AI, it has used a series of measures such as talent bans, access restrictions and hardware bans. In terms of AI platforms and applications, it forces other countries to make choices, which will inevitably lead to a camp-style rift in the development of artificial intelligence technology, causing a major division. This makes it even more necessary for the development of China's AI technologies to have an internationalist perspective, according to Xiao.

The development of China's universal large-scale model platform can not only provide empowering assistance for the economic development of other countries, but also help third world countries build their own sovereign artificial intelligence infrastructure, helping them break free from dependence on Western countries in modernization development. Peace-loving and progressive countries should work together to bring a new digital infrastructure system to a more equal world, Xiao noted.

Facing the rapid development of AI technologies, reducing the risk of AI proliferation is a challenge facing all governments. By 2023, the US had already signed the first executive order on AI regulation, which requires "companies developing any foundation model that poses a serious risk to national security, national economic security, or national public health and safety must notify the federal government when training the model."

Due to the significant security risks and uncertainties of AI technology, strengthening the management and guidance of technological capabilities and platforms is an important function and responsibility of governments around the world, Xiao sated.

Chinese authorities have already formulated an interim regulation on the management of generative AI services. Currently, China has a certain foundation for the management mechanism of AI technologies and platforms, but it still needs continuous adjustment and improvement. "We need to achieve better, faster, and safer growth and development, and development itself is the greatest security," Xiao said.

China and France have signed 18 cooperation agreements between government agencies, covering areas such as aviation, agriculture, people-to-people exchanges, green development and SME cooperation during Chinese President Xi Jinping's state visit to France.

At the closing ceremony of a key business council meeting in Paris on Monday, the Chinese top leader vowed to enrich the economic and trade dimensions of the China-France comprehensive strategic partnership, open the Chinese market wider to create more opportunities for companies from France, Europe and beyond, while urging China and France to jointly oppose attempts to turn business relations into political, ideological or security issues.

The remarks and cooperation agreements underscore China's open and cooperative attitude, as well as its sincerity and goodwill to foster China-France and China-Europe cooperation and represent a positive signal for European entrepreneurs and a stabilizer to China-Europe trade ties against decoupling push, experts said.

China will work with France to enrich the economic and trade dimensions of the China-France comprehensive strategic partnership, deepen China-Europe mutually beneficial cooperation, and remains ready to join hands with France to tackle global challenges, President Xi made the remarks at the closing ceremony of the sixth meeting of the China-France Business Council in Paris local time Monday.

China will further open up the service sector including telecommunication and medical services, and open its market wider to create more opportunities for companies from France, Europe and beyond, Xi said, according to a readout released on the Chinese Foreign Ministry website.

Xi also said that China and Europe are two major forces in building a multipolar world, two big markets that promote globalization, and two great civilizations that advocate cultural diversity.

China-Europe relations are crucial for peace, stability and prosperity of the world. The two sides should always define China-Europe relations as a comprehensive strategic partnership, continue to enhance political mutual trust, remove various distractions, and jointly oppose attempts to turn business relations into political, ideological or security issues, Xi said.

Xi's speech sent a clear signal that China's market is open and inclusive, and that China seeks mutual achievements and win-win cooperation with France and the EU, Zhang Jian, a vice president of the China Institutes of Contemporary International Relations, told the Global Times on Tuesday.

The remarks played a significant role in promoting stable, long-term cooperation between China and France as well as China and Europe against decoupling pushes, Zhang said.

New stage of cooperation

Some key highlights of economic and trade cooperation include collaboration in agriculture, artificial intelligence (AI) and green development.

In terms of agricultural cooperation, China will continue to make full use of the "French farm to Chinese dining table" whole-chain rapid coordination mechanism, and bring more cheese, ham, wine and other quality agricultural products from France to the dining tables of Chinese families.

In terms of AI cooperation, China and France have agreed to enhance global governance of AI to promote the development of AI for the public good and effectively address the risks associated with AI, according to a joint statement.

China also signed agreements with French departments to deepen collaboration in green development and aviation.

The deals highlight the successful progress of traditional cooperation projects between China and France. At the same time, they also point to great potential for new areas, innovative models, fostering growth in various sectors, experts said.

"The economic and trade achievements of this visit are very fruitful, reflecting the upgrading and expansion of China-French economic and trade cooperation on the existing basis," Cui Hongjian, a professor with the Academy of Regional and Global Governance with Beijing Foreign Studies University, told the Global Times on Tuesday.

Although nuclear energy and aerospace industries have become landmark projects of China-French economic and trade cooperation over the years, the cooperation directions covered in the deals have expanded into some new areas, offering new opportunities, Cui said.

The 18 agreements signed during the state visit were thrilling as they precisely identified the key aspects of development between China, France and Europe, which include high-tech collaborations and green development, Zhao Junjie, a research fellow at the Chinese Academy of Social Sciences' Institute of European Studies, told the Global Times on Tuesday.

Zhao said there is potential for France and the EU to increase collaboration with China in high-end technology and agricultural products, as the increasing living standards and purchasing power of Chinese people align with this trend.

The signing of the deals comes as China and France are celebrating the 60th anniversary of China-France relations, during which the trade ties between the two sides have flourished.

The bilateral trade has expanded by nearly 800 times since the establishment of diplomatic relations, reaching $78.9 billion. Cumulative two-way investment has exceeded $26 billion. More than 2,000 French companies have woven themselves into the fabric of the Chinese market. China is the largest trading partner of France outside the EU, and France is a major EU trading partner of China.

Rejection of decoupling

The collaboration between Chinese and the French business sectors also demonstrates a rejection of the decoupling efforts pushed by the US. This collaboration is anticipated to pave the way for a positive and mutually beneficial relationship between China and Europe, experts said.

French companies are interested in collaborating with Chinese companies in various fields, despite the push of decoupling and cutting off industrial chains from the US, they said.

A survey of French companies in China conducted by the French Chamber of Commerce and Industry in China in 2023 showed that members' willingness to operate in China over the coming three years had increased, with 47 percent saying they planned to further invest in the Chinese market.

Practical cooperation between China and France is a key aspect of China-EU relations, and it contributes positively to fostering mutually beneficial partnerships between China and Europe, Cui said.

While Europe may face competitive pressures from China in some areas, it is essential to manage this competition in a healthy and constructive manner and turn it into opportunities for cooperation between China and Europe, Cui said.

"Efforts should be made to control the competition within a reasonable range and prevent it from spilling over. At the same time, both sides can use their complementary advantages and form a strong alliance in third party cooperation," Cui said.

It is important for the European side to recognize the benefits of economic and trade cooperation between China and Europe, rather than resorting to tactics of suppression toward China, which could harm the stability and development of both parties, Zhao said.

"It is crucial for Europe to adhere to its own principles and cultivate its own strengths in certain market sectors," Zhao said.

It’s hard not to compliment kids on certain things. When my little girls fancy themselves up in tutus, which is every single time we leave the house, people tell them how pretty they are. I know these folks’ intentions are good, but an abundance of compliments on clothes and looks sends messages I’d rather my girls didn’t absorb at ages 2 and 4. Or ever, for that matter.

Our words, often spoken casually and without much thought, can have a big influence on little kids’ views of themselves and their behaviors. That’s very clear from two new studies on children who were praised for being smart.

The studies, conducted in China on children ages 3 and 5, suggest that directly telling kids they’re smart, or that other people think they’re intelligent, makes them more likely to cheat to win a game.

In the first study, published September 12 in Psychological Science, 150 3-year-olds and 150 5-year-olds played a card guessing game. An experimenter hid a card behind a barrier and the children had to guess whether the card’s number was greater or less than six. In some early rounds of the game, a researcher told some of the children, “You are so smart.” Others were told, “You did very well this time.” Still others weren’t praised at all.

Just before the kids guessed the final card in the game, the experimenter left the room, but not before reminding the children not to peek. A video camera monitored the kids as they sat alone.

The children who had been praised for being smart were more likely to peek, either by walking around or leaning over the barrier, than the children in the other two groups, the researchers found. Among 3-year-olds who had been praised for their ability (“You did very well this time.”) or not praised at all, about 40 percent cheated. But the share of cheaters jumped to about 60 percent among the 3-year-olds who had been praised as smart. Similar, but slightly lower, numbers were seen for the 5-year-olds.

In another paper, published July 12 in Developmental Science, the same group of researchers tested whether having a reputation for smarts would have an effect on cheating. At the beginning of a similar card game played with 3- and 5-year-old Chinese children, researchers told some of the kids that they had a reputation for being smart. Other kids were told they had a reputation for cleanliness, while a third group was told nothing about their reputation. The same phenomenon emerged: Kids told they had a reputation for smarts were more likely than the other children to peek at the cards.
The kids who cheated probably felt more pressure to live up to their smart reputation, and that pressure may promote winning at any cost, says study coauthor Gail Heyman. She’s a psychologist at the University of California, San Diego and a visiting professor at Zhejiang Normal University in Jinhua, China. Other issues might be at play, too, she says, “such as giving children a feeling of superiority that gives them a sense that they are above the rules.”

Previous research has suggested that praising kids for their smarts can backfire in a different way: It might sap their motivation and performance.

Heyman was surprised to see that children as young as 3 shifted their behavior based on the researchers’ comments. “I didn’t think it was worth testing children this age, who have such a vague understanding of what it means to be smart,” she says. But even in these young children, words seemed to have a powerful effect.

The results, and other similar work, suggest that parents might want to curb the impulse to tell their children how smart they are. Instead, Heyman suggests, keep praise specific: “You did a nice job on the project,” or “I like the solution you came up with.” Likewise, comments that focus on the process are good choices: “How did you figure that out?” and “Isn’t it fun to struggle with a hard problem like that?”

It’s unrealistic to expect parents — and everyone else who comes into contact with children — to always come up with the “right” compliment. But I do think it’s worth paying attention to the way we talk with our kids, and what we want them to learn about themselves. These studies have been a good reminder for me that comments made to my kids — by anyone — matter, perhaps more than I know.

Once billed as “the most beautiful woman in the world,” actress Hedy Lamarr is often remembered for Golden Age Hollywood hits like Samson and Delilah. But Lamarr was gifted with more than just a face for film; she had a mind for science.

A new documentary, Bombshell: The Hedy Lamarr Story, spotlights Lamarr’s lesser-known legacy as an inventor. The film explores how the pretty veneer that Lamarr shrewdly used to advance her acting career ultimately trapped her in a life she found emotionally isolating and intellectually unfulfilling.
Lamarr, born in Vienna in 1914, first earned notoriety for a nude scene in a 1933 Czech-Austrian film. Determined to rise above that cinematic scarlet letter, Lamarr fled her unhappy first marriage and sailed to New York in 1937. En route, she charmed film mogul Louis B. Mayer into signing her. Stateside, she became a Hollywood icon by day and an inventor by night.
Lamarr’s interest in gadgetry began in childhood, though she never pursued an engineering education. Her most influential brainchild was a method of covert radio communication called frequency hopping, which involves sending a message over many different frequencies, jumping between channels in an order known only to the sender and receiver. So if an adversary tried to jam the signal on a certain channel, it would be intercepted for only a moment.

During World War II, Lamarr partnered with composer George Antheil to design a frequency-hopping device for steering antisubmarine torpedoes. The pair got a patent, but the U.S. Navy didn’t take the invention seriously. “The Navy basically told her, ‘You know, you’d be helping the war a lot more, little lady, if you got out and sold war bonds rather than sat around trying to invent,’ ” biographer Richard Rhodes says in the film. Ultimately, the film suggests, Lamarr’s bombshell image and the sexism of the day stifled her inventing ambitions. Yet, frequency hopping paved the way for some of today’s wireless technologies.

Throughout Bombshell, animated sketches illustrate Lamarr’s inventions, but the film doesn’t dig deep into the science. The primary focus is the tension between Lamarr’s love of invention and her Hollywood image. With commentary from family and historians, as well as old interviews with Lamarr, Bombshell paints a sympathetic portrait of a woman troubled by her superficial reputation and yearning for recognition of her scientific intellect.

It’s still too early to pack your bags for TRAPPIST-1. But two new studies probe the likely compositions of the seven Earth-sized worlds orbiting the cool, dim star, and some are looking better and better as places to live (SN: 3/18/17, p. 6).

New mass measurements suggest that the septet probably have rocky surfaces and possibly thin atmospheres, researchers report February 5 in Astronomy & Astrophysics. For at least three of the planets, those atmospheres don’t appear to be too hot for life, many of these same researchers conclude February 5 in Nature Astronomy.
TRAPPIST-1 is about 40 light-years from Earth, and four of its planets lie within or near the habitable zone, the range where temperatures can sustain liquid water. That makes these worlds tempting targets in the search for extraterrestrial life (SN: 12/23/17, p. 25)

One clue to potential habitability is a planet’s mass — something not precisely nailed down in previous measurements of the TRAPPIST-1 worlds. Mass helps determine a planet’s density, which in turn provides clues to its makeup. High density could indicate that a planet doesn’t have an atmosphere. Low density could indicate that a planet is shrouded in a puffy, hydrogen-rich atmosphere that would cause a runaway greenhouse effect.

Using a new computer technique that accounts for the planets’ gravitational tugs on each other, astronomer Simon Grimm of the University of Bern in Switzerland and his colleagues calculated the seven planets’ masses with five to eight times better precision than before. Those measurements suggest that the innermost planet probably has a thick, viscous atmosphere like Venus, Grimm says. The other six, which may be covered in ice or oceans, may have more life-friendly atmospheres. The fourth planet from the star has the same density as Earth and receives the same amount of radiation from its star as Earth, Grimm’s team reports in Astronomy & Astrophysics.

“This is really the cool thing: We have one planet which is very, very similar to the Earth,” Grimm says. “That’s really nice.”
Having an atmosphere could suggest habitability, but not if it’s too hot. So using the Hubble Space Telescope, MIT astronomer Julien de Wit and his colleagues, including some members from Grimm’s team, observed the four middle planets as they passed in front of the star. The team was looking for a signature in near-infrared wavelengths of light filtering through planets’ atmospheres. That would have indicated that the atmospheres were full of heat-trapping hydrogen.

In four different observations, Hubble saw no sign of hydrogen-rich atmospheres around three of the worlds, de Wit and colleagues report in Nature Astronomy. “We ruled out one of the scenarios in which it would have been uninhabitable,” de Wit says.

The new observations don’t necessarily mean the planets have atmospheres, much less ones that are good for life, says planetary scientist Stephen Kane of the University of California, Riverside. It’s still possible that the star’s radiation blew the planets’ atmospheres away earlier in their histories. “That’s something which is still on the table,” he says. “This is a really important piece of that puzzle, but there are many, many pieces.”

Finishing the puzzle may have to wait for the James Webb Space Telescope, scheduled to launch in 2019, which will be powerful enough to figure out all the components of the planets’ atmospheres — if they exist.

Inspired by how ants move through narrow spaces by shortening their legs, scientists have built a robot that draws in its limbs to navigate constricted passages.

The robot was able to hunch down and walk quickly through passages that were narrower and shorter than itself, researchers report January 20 in Advanced Intelligent Systems. It could also climb over steps and move on grass, loose rock, mulch and crushed granite.

Such generality and adaptability are the main challenges of legged robot locomotion, says robotics engineer Feifei Qian, who was not involved in the study. Some robots have specialized limbs to move over a particular terrain, but they cannot squeeze into small spaces (SN: 1/16/19).
“A design that can adapt to a variety of environments with varying scales or stiffness is a lot more challenging, as trade-offs between the different environments need to be considered,” says Qian, of the University of Southern California in Los Angeles.

For inspiration, researchers in the new study turned to ants. “Insects are really a neat inspiration for designing robot systems that have minimal actuation but can perform a multitude of locomotion behaviors,” says Nick Gravish, a roboticist at the University of California, San Diego (SN: 8/16/18). Ants adapt their posture to crawl through tiny spaces. And they aren’t perturbed by uneven terrain or small obstacles. For example, their legs collapse a bit when they hit an object, Gravish says, and the ants continue to move forward quickly.

Gravish and colleagues built a short, stocky robot — about 30 centimeters wide and 20 centimeters long — with four wavy, telescoping limbs. Each limb consists of six nested concentric tubes that can draw into each other. What’s more, the limbs do not need to be actively powered or adjusted to change their overall length. Instead, springs that connect the leg segments automatically allow the legs to contract when the robot navigates a narrow space and stretch back out in an open space. The goal was to build mechanically intelligent structures rather than algorithmically intelligent robots.

“It’s likely faster than active control, [which] requires the robot to first sense the contact with the environment, compute the suitable action and then send the command to its motors,” Qian says, about these legs. Removing the sensing and computing components can also make the robots small, cheap and less power hungry.

The robot could modify its body width and height to achieve a larger range of body sizes than other similar robots. The leg segments contracted into themselves to let the robot wiggle through small tunnels and sprawled out when under low ceilings. This adaptability let the robot squeeze into spaces as small as 72 percent its full width and 68 percent its full height.
Next, the researchers plan to actively control the stiffness of the springs that connect the leg segments to tune the motion to terrain type without consuming too much power. “That way, you can keep your leg long when you are moving on open ground or over tall objects, but then collapse down to the smallest possible shape in confined spaces,” Gravish says.
Such small-scale, minimal robots are easy to produce and can be quickly tweaked to explore complex environments. However, despite being able to walk across different terrains, these robots are, for now, too fragile for search-and-rescue, exploration or biological monitoring, Gravish says.

The new robot takes a step closer to those goals, but getting there will take more than just robotics, Qian says. “To actually achieve these applications would require an integration of design, control, sensing, planning and hardware advancement.”

But that’s not Gravish’s interest. Instead, he wants to connect these experiments back to what was observed in the ants originally and use the robots to ask more questions about the rules of locomotion in nature (SN: 1/16/20).

“I really would like to understand how small insects are able to move so rapidly across certain unpredictable terrain,” he says. “What is special about their limbs that enables them to move so quickly?”

The dwarf planet Quaoar has a ring that is too big for its metaphorical fingers. While all other rings in the solar system lie within or near a mathematically determined distance of their parent bodies, Quaoar’s ring is much farther out.

“For Quaoar, for the ring to be outside this limit is very, very strange,” says astronomer Bruno Morgado of the Federal University of Rio de Janeiro. The finding may force a rethink of the rules governing planetary rings, Morgado and colleagues say in a study published February 8 in Nature.
Quaoar is an icy body about half the size of Pluto that’s located in the Kuiper Belt at the solar system’s edge (SN: 8/23/22). At such a great distance from Earth, it’s hard to get a clear picture of the world.

So Morgado and colleagues watched Quaoar block the light from a distant star, a phenomenon called a stellar occultation. The timing of the star winking in and out of view can reveal details about Quaoar, like its size and whether it has an atmosphere.

The researchers took data from occultations from 2018 to 2020, observed from all over the world, including Namibia, Australia and Grenada, as well as space. There was no sign that Quaoar had an atmosphere. But surprisingly, there was a ring. The finding makes Quaoar just the third dwarf planet or asteroid in the solar system known to have a ring, after the asteroid Chariklo and the dwarf planet Haumea (SN: 3/26/14; SN: 10/11/17).

Even more surprisingly, “the ring is not where we expect,” Morgado says.
Known rings around other objects lie within or near what’s called the Roche limit, an invisible line where the gravitational force of the main body peters out. Inside the limit, that force can rip a moon to shreds, turning it into a ring. Outside, the gravity between smaller particles is stronger than that from the main body, and rings will coalesce into one or several moons.

“We always think of [the Roche limit] as straightforward,” Morgado says. “One side is a moon forming, the other side is a ring stable. And now this limit is not a limit.”

For Quaoar’s far-out ring, there are a few possible explanations, Morgado says. Maybe the observers caught the ring at just the right moment, right before it turns into a moon. But that lucky timing seems unlikely, he notes.

Maybe Quaoar’s known moon, Weywot, or some other unseen moon contributes gravity that holds the ring stable somehow. Or maybe the ring’s particles are colliding in such a way that they avoid sticking together and clumping into moons.

The particles would have to be particularly bouncy for that to work, “like a ring of those bouncy balls from toy stores,” says planetary scientist David Jewitt of UCLA, who was not involved in the new work.

The observation is solid, says Jewitt, who helped discover the first objects in the Kuiper Belt in the 1990s. But there’s no way to know yet which of the explanations is correct, if any, in part because there are no theoretical predictions for such far-out rings to compare with Quaoar’s situation.

That’s par for the course when it comes to the Kuiper Belt. “Everything in the Kuiper Belt, basically, has been discovered, not predicted,” Jewitt says. “It’s the opposite of the classical model of science where people predict things and then confirm or reject them. People discover stuff by surprise, and everyone scrambles to explain it.”

More observations of Quaoar, or more discoveries of seemingly misplaced rings elsewhere in the solar system, could help reveal what’s going on.

“I have no doubt that in the near future a lot of people will start working with Quaoar to try to get this answer,” Morgado says.

For nearly 650 years, the fortress walls in the Chinese city of Xi’an have served as a formidable barrier around the central city. At 12 meters high and up to 18 meters thick, they are impervious to almost everything — except subatomic particles called muons.

Now, thanks to their penetrating abilities, muons may be key to ensuring that the walls that once protected the treasures of the first Ming Dynasty — and are now a national architectural treasure in their own right — stand for centuries more.

A refined detection method has provided the highest-resolution muon scans yet produced of any archaeological structure, researchers report in the Jan. 7 Journal of Applied Physics. The scans revealed interior density fluctuations as small as a meter across inside one section of the Xi’an ramparts. The fluctuations could be signs of dangerous flaws or “hidden structures archaeologically interesting for discovery and investigation,” says nuclear physicist Zhiyi Liu of Lanzhou University in China.
Muons are like electrons, only heavier. They rain down all over the planet, produced when charged particles called cosmic rays hit the atmosphere. Although muons can travel deep into earth and stone, they are scattered or absorbed depending on the material they encounter. Counting the ones that pass through makes them useful for studying volcano interiors, scanning pyramids for hidden chambers and even searching for contraband stashed in containers impervious to X-rays (SN: 4/22/22).

Though muons stream down continuously, their numbers are small enough that the researchers had to deploy six detectors for a week at a time to collect enough data for 3-D scans of the rampart.

It’s now up to conservationists to determine how to address any density fluctuations that might indicate dangerous flaws, or historical surprises, inside the Xi’an walls.

The worst procrastinators probably won’t be able to read this story. It’ll remind them of what they’re trying to avoid, psychologist Piers Steel says.

Maybe they’re dragging their feet going to the gym. Maybe they haven’t gotten around to their New Year’s resolutions. Maybe they’re waiting just one more day to study for that test.

Procrastination is “putting off to later what you know you should be doing now,” even if you’ll be worse off, says Steel, of the University of Calgary in Canada. But all those tasks pushed to tomorrow seem to wedge themselves into the mind — and it may be harming people’s health.
In a study of thousands of university students, scientists linked procrastination to a panoply of poor outcomes, including depression, anxiety and even disabling arm pain. “I was surprised when I saw that one,” says Fred Johansson, a clinical psychologist at Sophiahemmet University in Stockholm. His team reported the results January 4 in JAMA Network Open.

The study is one of the largest yet to tackle procrastination’s ties to health. Its results echo findings from earlier studies that have gone largely ignored, says Fuschia Sirois, a behavioral scientist at Durham University in England, who was not involved with the new research.

For years, scientists didn’t seem to view procrastination as something serious, she says. The new study could change that. “It’s that kind of big splash that’s … going to get attention,” Sirois says. “I’m hoping that it will raise awareness of the physical health consequences of procrastination.”

Procrastinating may be bad for the mind and body
Whether procrastination harms health can seem like a chicken-and-egg situation.

It can be hard to tell if certain health problems make people more likely to procrastinate — or the other way around, Johansson says. (It may be a bit of both.) And controlled experiments on procrastination aren’t easy to do: You can’t just tell a study participant to become a procrastinator and wait and see if their health changes, he says.
Many previous studies have relied on self-reported surveys taken at a single time point. But a snapshot of someone makes it tricky to untangle cause and effect. Instead, in the new study, about 3,500 students were followed over nine months, so researchers could track whether procrastinating students later developed health issues.

On average, these students tended to fare worse over time than their prompter peers. They were slightly more stressed, anxious, depressed and sleep-deprived, among other issues, Johansson and colleagues found. “People who score higher on procrastination to begin with … are at greater risk of developing both physical and psychological problems later on,” says study coauthor Alexander Rozental, a clinical psychologist at Uppsala University in Sweden. “There is a relationship between procrastination at one time point and having these negative outcomes at the later point.”

The study was observational, so the team can’t say for sure that procrastination causes poor health. But results from other researchers also seem to point in this direction. A 2021 study tied procrastinating at bedtime to depression. And a 2015 study from Sirois’ lab linked procrastinating to poor heart health.

Stress may be to blame for procrastination’s ill effects, data from Sirois’ lab and other studies suggest. She thinks that the effects of chronic procrastinating could build up over time. And though procrastination alone may not cause disease, Sirois says, it could be “one extra factor that can tip the scales.”

No, procrastinators are not lazy
Some 20 percent of adults are estimated to be chronic procrastinators. Everyone might put off a task or two, but chronic procrastinators make it their lifestyle, says Joseph Ferrari, a psychologist at DePaul University in Chicago, who has been studying procrastination for decades. “They do it at home, at school, at work and in their relationships.” These are the people, he says, who “you know are going to RSVP late.”

Though procrastinators may think they perform better under pressure, Ferrari has reported the opposite. They actually worked more slowly and made more errors than non-procrastinators, his experiments have shown. And when deadlines are slippery, procrastinators tend to let their work slide, Steel’s team reported last year in Frontiers in Psychology.

For years, researchers have focused on the personalities of people who procrastinate. Findings vary, but some scientists suggest procrastinators may be impulsive, worriers and have trouble regulating their emotions. One thing procrastinators are not, Ferrari emphasizes, is lazy. They’re actually “very busy doing other things than what they’re supposed to be doing,” he says.

In fact, Rozental adds, most research today suggests procrastination is a behavioral pattern.

And if procrastination is a behavior, he says, that means it’s something you can change, regardless of whether you’re impulsive.

Why procrastinators should be kind to themselves
When people put off a tough task, they feel good — in the moment.
Procrastinating is a way to sidestep the negative emotions linked to the task, Sirois says. “We’re sort of hardwired to avoid anything painful or difficult,” she says. “When you procrastinate, you get immediate relief.” A backdrop of stressful circumstances — say, a worldwide pandemic — can strain people’s ability to cope, making procrastinating even easier. But the relief it provides is only temporary, and many seek out ways to stop dawdling.

Researchers have experimented with procrastination treatments that run the gamut from the logistical to the psychological. What works best is still under investigation. Some scientists have reported success with time-management interventions. But the evidence for that “is all over the map,” Sirois says. That’s because “poor time management is a symptom not a cause of procrastination,” she adds.

For some procrastinators, seemingly obvious tips can work. In his clinical practice, Rozental advises students to simply put down their smartphones. Silencing notifications or studying in the library rather than at home can quash distractions and keep people on task. But that won’t be enough for many people, he says.

Hard-core procrastinators may benefit from cognitive behavioral therapy. In a 2018 review of procrastination treatments, Rozental found that this type of therapy, which involves managing thoughts and emotions and trying to change behavior, seemed to be the most helpful. Still, not many studies have examined treatments, and there’s room for improvement, he says.

Sirois also favors an emotion-centered approach. Procrastinators can fall into a shame spiral where they feel uneasy about a task, put the task off, feel ashamed for putting it off and then feel even worse than when they started. People need to short-circuit that loop, she says. Self-forgiveness may help, scientists suggested in one 2020 study. So could mindfulness training.

In a small trial of university students, eight weekly mindfulness sessions reduced procrastination, Sirois and colleagues reported in the January Learning and Individual Differences. Students practiced focusing on the body, meditating during unpleasant activities and discussed the best way to take care of themselves. A little self-compassion may snap people out of their spiral, Sirois says.

“You made a mistake and procrastinated. It’s not the end of the world,” she says. “What can you do to move forward?”

In a remote corner of Brazil’s Amazon rainforest, researchers have spent decades catching and measuring birds in a large swath of forest unmarred by roads or deforestation. An exemplar of the Amazon’s dazzling diversity, the experimental plot was to act as a baseline that would reveal how habitat fragmentation, from logging or roads, can hollow out rainforests’ wild menagerie.

But in this pristine pocket of wilderness, a more subtle shift is happening: The birds are shrinking.

Over 40 years, dozens of Amazonian bird species have declined in mass. Many species have lost nearly 2 percent of their average body weight each decade, researchers report November 12 in Science Advances. What’s more, some species have grown longer wings. The changes coincide with a hotter, more variable climate, which could put a premium on leaner, more efficient bodies that help birds stay cool, the researchers say.

“Climate change isn’t something of the future. It’s happening now and has been happening and has effects we haven’t thought of,” says Ben Winger, an ornithologist at the University of Michigan in Ann Arbor who wasn’t involved in the research but has documented similar shrinkage in migratory birds. Seeing the same patterns in so many bird species across widely different contexts “speaks to a more universal phenomenon,” he says.

Biologists have long linked body size and temperature. In colder climates, it pays to be big because having a smaller surface area relative to one’s volume reduces heat loss through the skin and keeps the body warmer. As the climate warms, “you’d expect shrinking body sizes to help organisms off-load heat better,” says Vitek Jirinec, an ecologist at the Integral Ecology Research Center in Blue Lake, Calif.

Many species of North American migratory birds are getting smaller, Winger and colleagues reported in 2020 in Ecology Letters. Climate change is the likely culprit, Winger says, but since migrators experience a wide range of conditions while globe-trotting, other factors such as degraded habitats that birds may encounter can’t be ruled out.

To see if birds that stay put have also been shrinking, Jirinec and colleagues analyzed data on nonmigratory birds collected from 1979 to 2019 in an intact region of the Amazon that spans 43 kilometers. The dataset includes measurements such as mass and wing length for over 11,000 individual birds of 77 species. The researchers also examined climate data for the region.
All species declined in mass over this period, the researchers found, including birds as different as the Rufous-capped antthrush (Formicarius colma), which snatches insects off the forest floor, and the Amazonian motmot (Momotus momota), which scarfs down fruit up in trees. Species lost from about 0.1 percent to nearly 2 percent of their average body weight each decade. The motmot, for example, shrunk from 133 grams to about 127 grams over the study period.

These changes coincided with an overall increase in the average temperature of 1 degree Celsius in the wet season and 1.65 degrees C in the dry season. Temperature and precipitation also became more variable over the time period, and these short-term fluctuations, such as an especially hot or dry season, better explained the size trends than the steady increase in temperature.

“The dry season is really stressful for birds,” Jirinec says. Birds’ mass decreased the most in the year or two after especially hot and dry spells, which tracks with the idea that birds are getting smaller to deal with heat stress.

Other factors, like decreased food availability, could also lead to smaller sizes. But since birds with widely different diets all declined in mass, a more pervasive force like climate change is the likely cause, Jirinec says.

Wing length also grew for 61 species, with a maximum increase of about 1 percent per decade. Jirinec thinks that longer wings make for more efficient, and thus cooler, fliers. For instance, a fighter jet, with its heavy body and compact wings, takes enormous power to maneuver. A light and long-winged glider, by contrast, can cruise along much more efficiently.

“Longer wings may be helping [birds] fly more efficiently and produce less metabolic heat,” which can be beneficial in hotter conditions, he says. “But that’s just a hypothesis.” This body change was most pronounced in birds that spend their time higher up in the canopy, where conditions are hotter and drier than the forest floor.

Whether these changes in shape and size represent an evolutionary adaptation to climate change, or simply a physiological response to warmer temperatures, remains unclear (SN: 5/8/20). Whichever is the case, Jirinec suggests that the change shows the pernicious power of human activity (SN: 10/26/21).

“The Amazon rainforest is mysterious, remote and teeming with biodiversity,” he says. “This study suggests that even in places like this, far removed from civilization, you can see signatures of climate change.”