2021魔都新茶论坛

China National Nuclear Corporation (CNNC) has opened ten of its nuclear technology research facilities and testing platforms, including China's new-generation "artificial sun" Huanliu-3 (HL-3) tokamak, to the world for the first time. The move will further enhance China's influence in nuclear science and technology globally, injecting strong "nuclear power" into promoting win-win cooperation worldwide, the Global Times learned from CNNC at a press conference on March 19 in Beijing during the 17th China International Nuclear Industry Exhibition.

This batch of facilities also include the world's highest-energy compact proton cyclotron accelerator the Beijing Radioactive Ion-beam Facility (BRIF), one of the "world's six major neutron sources" China Advanced Research Reactor, the Beishan Underground Research Laboratory (Beishan URL) located 560 meters underground, and the Minjiang Test Reactor for medical isotope research, among others. Many of these facilities have reached world-class level and even lead the industry globally, showcasing the hard work of Chinese researchers and demonstrating the "hardcore strength" of China's nuclear industry innovation.

The HL-3 tokamak, China's largest and most advanced tokamak, is designed to support the operation of the International Thermonuclear Experimental Reactor (ITER) and the development of future fusion reactors.

The Beishan URL in Northwest China's Gansu Province, China, is the country's first large underground research facility used for the safe disposal of high-level radioactive waste. It is an important research facility for the International Atomic Energy Agency and the China Atomic Energy Authority, playing a crucial role in China's nuclear fuel closed-loop technology innovation system.

The BRIF, the only operational online isotope separation radioactive ion beam facility in Asia, can produce over 60 stable nuclear beams and 55 radioactive nuclear beams. It fills the technological gap in China's medium-energy high-current proton cyclotron accelerator and high-resolution isotope separator, reaching an advanced level internationally. 

The BRIF conducts research in nuclear physics basics, nuclear physics applications, and nuclear data, promoting basic research and application transformation, achieving a number of high-level scientific achievements. Researchers from the facility have cooperated with teams from more than ten countries including Russia, the US, Germany, Japan, and Poland, attracting many top international scientists to come to China to conduct cutting-edge research.

The opening of these research facilities and testing platforms by China to the world is expected to promote the development of nuclear technology worldwide. Sumair N. Khan, Science and Technology Counselor at the Pakistani Embassy in China, told the Global Times that these open research facilities are crucial for developing countries, especially for countries like Pakistan. He highlighted the importance of facilities like China's advanced research reactor, micro-neutron source reactor, and nuclear environmental simulation facilities for Pakistan.

"Developing countries may not have the research conditions similar to China but are eager to utilize Chinese research facilities to train researchers and receive support for their research work," Zhang Libo, vice president of the China Institute of Atomic Energy, under CNNC, told the Global Times. He emphasized the importance of international cooperation in nuclear science and technology for mutual benefit and scientific progress.

Zhang also believes that CNNC's opening of nuclear technology-related research facilities and test platforms to the world will promote high-level international openness. He stated that by attracting international peers to utilize these facilities, China can understand the direction of international research, grasp the dynamics of global economic development, and integrate into the global research environment.

With final arrangements underway to hold a long-stalled trilateral leaders' meeting among China, Japan, and South Korea, experts noted that the cooperation among the three countries is of great importance to the economy and stability in East Asia and the countries should seize the opportunity to alleviate tensions and foster collaboration.

South Korea is in final consultations with China and Japan to hold a trilateral meeting of their leaders on May 26 and 27, according to South Korea's Ministry of Foreign Affairs on Saturday. An official at the ministry said that the three countries agreed to hold the meeting "at the earliest date convenient for all sides."

According to South Korea's Yonhap News Agency, Chinese Premier Li Qiang and Japanese Prime Minister Fumio Kishida are expected to visit Seoul to meet with President Yoon Suk Yeol, as South Korea is the current rotating chair.

Chinese Foreign Ministry spokesperson Mao Ning said during a regular press conference on April 11 that China attaches importance to the cooperation among China, Japan, and South Korea, and hopes that the three sides will jointly create conditions for the leaders' meeting. "We are ready to maintain communication with South Korea and Japan for the meeting's preparation," Mao said at that time.

Japan's Fumio Kishida also expressed support for the upcoming three-way talks, telling a press conference on Saturday that coordination will continue for preparations for the meeting.

In another development, the foreign ministries of China and South Korea are in the final stages of coordinating the specific schedule for South Korean Foreign Minister Cho Tae-yul's visit to China, ahead of the trilateral leaders' talks, media reported.

"The cooperation among China, Japan, and South Korea holds immense benefits not only for East Asia, but also for the international community," Lü Chao, a research fellow at the Liaoning Academy of Social Sciences, told the Global Times on Monday.

Lü said that improving collaboration is in the interests of all parties involved, a common understanding among the three countries, especially in the economy. "It's also a gateway for building stronger consensus in other areas among the three countries," he said.

According to Japan Times, the three-way discussions are seen as covering six areas including people-to-people exchanges, economy and trade, public health, and peace and security, with outcome documents likely to be released. Bilateral talks may also take place.

The trilateral talks were last held in Chengdu, Southwest China's Sichuan Province in December 2019. The prolonged suspension is a result of the COVID-19 pandemic as well as some political and diplomatic conflicts among the countries, such as the blockade of China in the high-tech field by South Korea and Japan, Lü noted.

If the trilateral meeting proceeds as planned, it will bring positive developments for East Asian countries and contribute to peace and stability in the region, experts said. However, they also warned that there are lingering political and diplomatic challenges to overcome, particularly as Japan and South Korea are actively joining the small circles led by the US to counter China.

Japan and South Korea should seize the opportunity presented by this meeting to alleviate the current diplomatic tensions among the three countries, Lü said, noting that economic cooperation could serve as a starting point for enhancing trust and fostering stronger relations.

"The three parties should work together to identify shared interests and reach consensus on important issues in order to promote productive discussions and foster increased cooperation across different sectors in the future," Lü noted.

Multiple Chinese cities including Dongguan in South China's Guangdong Province have recently announced a number of policies to stabilize employment and manufacturing around the Chinese Lunar New Year holidays (which falls from February 10-17) in order to ensure a strong economic start and sustained recovery in 2024.

Dongguan will offer subsidies worth 300 yuan ($42) to every worker outside Guangdong that will return to their positions at key enterprises in the city from February 12-17, while 200 yuan in subsidies will be provided for those willing to return to their posts from February 18-20, according to a circular on local government website.

In addition, enterprises in the city will get subsidies of up to 300,000 yuan for new hiring from February 10 to March 9. The city is offering a series of targeted policies to ensure manufacturing production in enterprises above the designated scale, services firms enhancing effectiveness, and enterprises attending exhibitions, among others.

Quanzhou in East China's Fujian Province and Yongkang in East China's Zhejiang Province have recently announced similar measures to encourage enterprises to expand employment and increase output for a good start in 2024.

Among the measures, enterprises in Quanzhou will receive subsidies of 1,000 yuan per worker, capped at 200,000 yuan in total, if they have taken active measures to stabilize workforce and maintain continuous production in February.

The moves came as local governments are ramping up efforts to implement pro-growth policy measures to kickstart the country's economic recovery in 2024 following the tone-setting Central Economic Work Conference in December 2023.

On the first working day of 2024, Han Wenxiu, executive deputy director of the office of the Central Committee for Financial and Economic Affairs, wrote in an article published in the People's Daily that China's economic recovery and long-term improvement remain unchanged, calling for the implementation of policies that would help stabilize expectations, promote growth and boost employment.

"Currently, the Chinese economy is experiencing comprehensive, full-loaded recovery across many sectors. The economy is expected to be better than foreign financial institutions' forecast in 2024, and may reach 5 percent growth," Cao Heping, a professor from Peking University, told the Global Times.

He said the governments should step up credit support in 2024 in order to ensure reasonable and ample liquidity to meet the needs of real economy.

As November kicks in, Hollywood is gearing up for an intensive release period with four major films set to hit Chinese theaters, which film critics said could bring strong support for the home stretch of the annual box office both in China and North America. 

Shi Wenxue, a film critic based in Beijing, told the Global Times on Thursday that November and early December is usually the "Hollywood month" in the Chinese film market as a lot of Hollywood films tend to be released during the period, aiming to set the stage for the New Year film period.

"After the global pandemic crisis, it is good to see the return of Hollywood movies. Their release would undoubtedly help to improve the annual box office of the world's two largest film markets - China and the US," he said, adding that The Marvels might get the most attention among Chinese moviegoers due to its well-known characters. 

The superhero movie is set to premiere in the Chinese mainland on Friday, the same day as in North America.

Brie Larson, an Oscar-winning actress, reprises her role as Captain Marvel, showcasing her formidable powers in a universe-spanning adventure. The film introduces new characters for a thrilling cosmic escapade. Early reviews for the film are mixed, with a 58 percent freshness rating on Rotten Tomatoes and a 50-point composite score on Metacritic.

Then on November 17, Lionsgate's The Hunger Games: Songbird and The Snake will have its global premiere. Adapted from the immensely popular book series, the film is directed by Francis Lawrence, who also directed The Hunger Games: Catching Fire.

Disney's new film, Wish, will debut on November 22 in North America and November 24 in the Chinese mainland. Dubbed by Chinese actress Liu Yifei and actor Yu Shi, the animated feature follows the story of Asha, a determined and resilient girl. 

December 8 will see the release of Wonka, the prequel to Charlie and the Chocolate Factory. Focusing on Willy Wonka's youth, the film narrates his adventures leading up to becoming the head of the chocolate factory. Hollywood heartthrob Timothee Chalamet takes on the lead role, adding a fresh allure to Wonka's character. Behind the scenes, the film boasts a stellar team, with producer David Heyman, known for the Harry Potter series, and Paul King, director of the Paddington series, at the helm.

So far this year, the Chinese box office has grossed 49.68 billion yuan ($6.82 billion), and has surpassed the level from 2020 to 2022, when the global pandemic hit cinemas hard. 

"It would be ideal if the annual box office in China could achieve 50 billion yuan," Shi said. 

For flowers, too much light at night could lead to a pollination hangover by day.

Far from any urban street, researchers erected street lights in remote Swiss meadows to mimic the effects of artificial light pollution. In fields lit during the night, flowers had 62 percent fewer nocturnal visitors than flowers in dark meadows, researchers report August 2 in Nature.

For one of the most common flowers, daytime pollination didn’t make up for nightly losses, says ecologist Eva Knop of the University of Bern in Switzerland. In a detailed accounting of the pollination life of cabbage thistles (Cirsium oleraceum), Knop and colleagues found that night-lit plants produced 13 percent fewer seeds overall than counterparts in naturally dark places.
Night lights could affect the entire network of plants and pollinators, the team suggests. In the test fields, nighttime pollination wasn’t just the business of a few kinds of specialized moth-loving plants. Flowers that fed a wide range of nighttime visitors also attracted a broad buzzing circus of different kinds of daytime pollinators. If the daytime insects don’t make up for nocturnal losses, a flower’s population might dwindle. And a lot of insects, both day and night, might then feel the loss of nectar and foliage, Knop says.

More than 80 percent of flower species get some help from animals in making seeds, and none evolved with light after sundown. “I hope people start to realize that it’s really something that changes the whole ecosystem,” Knop says.
The new study is the first to show how artificial light affects plants’ ability to make seeds, she says. The test is also unusual because it considers all kinds of insect pollinators instead of focusing on, say, only night-flying moths.
This big-picture view was so not easy to achieve. Finding possible dead-dark sites in highly developed Europe to set up LED lamps was impossible, so researchers worked in 14 dark-as-possible, remote meadows in land rising toward the Alps. But that created a problem. “If you don’t have light, you don’t have power,” Knop points out. To avoid generator growls and smells confounding their results, researchers painstakingly scouted sites where possible near water-powered energy sources and overall used “really long cables.”
For the sites with natural night, researchers measured pollination by patrolling set paths and catching any insect wriggling on a flower — in complete darkness, of course. The team used night-vision goggles but still didn’t have a perfect view, she says. It’s “not that easy to catch insects without three-dimensional vision.”

Besides paying special attention to the commonly visited cabbage thistle, researchers pieced together the whole network of which pollinator species visited which plant species day or night. Analysis of this Matterhorn of data suggested that changes in the night crew could affect daytime meadows.

The idea that night light could have broad knock-on effects on daytime pollinators is still speculation at this point, says ecologist Darren Evans of Newcastle University in England, who also studies light pollution and pollination. But the risk of such spillover warrants more attention.

A boy who lived in what’s now South Africa nearly 2,000 years ago has lent a helping genome to science. Using the long-gone youngster’s genetic instruction book, scientists have estimated that humans emerged as a distinct population earlier than typically thought, between 350,000 and 260,000 years ago.

The trick was retrieving a complete version of the ancient boy’s DNA from his skeleton to compare with DNA from people today and from Stone Age Neandertals and Denisovans. Previously documented migrations of West African farmers to East Africa around 2,000 years ago, and then to southern Africa around 1,500 years ago, reshaped Africans’ genetics — and obscured ancient ancestry patterns — more than has been known, the researchers report online September 28 in Science.
The ancient boy’s DNA was not affected by those migrations. As a result, it provides the best benchmark so far for gauging when Homo sapiens originated in Africa, evolutionary geneticist Carina Schlebusch of Uppsala University in Sweden and her colleagues conclude.

In line with the new genetically derived age estimate for human origins, another team has proposed that approximately 300,000-year-old fossils found in northwestern Africa belonged to H. sapiens (SN: 7/8/17, p. 6). Some researchers suspect a skull from South Africa’s Florisbad site, dated to around 260,000 years ago, qualifies as H. sapiens. But investigators often place our species’ origins close to 200,000 years ago (SN: 2/26/05, p. 141). There is broad consensus that several fossils from that time represent H. sapiens.

Debate over the timing of human origins will continue despite the new evidence from the child, whose remains came from previous shoreline excavations near the town of Ballito Bay, says Uppsala University evolutionary geneticist and study coauthor Mattias Jakobsson. “We don’t know if early Homo sapiens fossils or the Florisbad individual were genetically related to the Ballito Bay boy,” he says.

Thus, the precise timing of humankind’s emergence, and exact patterns of divergence among later human populations, remain unclear. Researchers have yet to retrieve DNA from fossils dating between 200,000 and 300,000 years old that either securely or possibly belong to H. sapiens.
However early human evolution played out, later mixing and mingling of populations had a big genetic impact. DNA evidence from more recent fossils, including those studied by Schlebusch’s group, increasingly suggests that Stone Age human groups migrated from one part of Africa to another and mated with each other along the way (SN: 10/20/12, p. 9), says Harvard Medical School evolutionary geneticist Pontus Skoglund. In the Sept. 21 Cell, he and his colleagues report that DNA from 16 Africans, whose remains date to between 8,100 and 400 years ago, reveals a shared ancestry among hunter-gatherers from East Africa to South Africa that existed before West African farmers first arrived 2,000 years ago.

That ancient set of common genes still comprises a big, varying chunk of the DNA of present-day Khoisan people in southern Africa, Skoglund’s group found. Earlier studies found that the Khoisan — consisting of related San hunter-gatherer and Khoikhoi herding groups — display more genetic diversity than any other human population.

Schlebusch’s team estimates that a genetic split between the Khoisan and other Africans occurred roughly 260,000 years ago, shortly after humankind’s origins and around the time of the Florisbad individual. Khoisan people then diverged into two genetically distinct populations around 200,000 years ago, the researchers calculate.

Ancient DNA in Schlebusch’s study came from seven individuals unearthed at six South African sites. Three hunter-gatherers, including the Ballito Bay boy, lived about 2,000 years ago. Four farmers lived between 500 and 300 years ago.

Comparisons to DNA from modern populations in Africa and elsewhere indicated that between 9 percent and 30 percent of Khoisan DNA today comes from an East African population that had already interbred with Eurasian people. Those East Africans were likely the much-traveled farmers who started out in West Africa and reached southern Africa around 1,500 years ago, the researchers propose.

MINNEAPOLIS — Birds don’t need to be drenched in crude oil to be harmed by spills and leaks.

Ingesting even small amounts of oil can interfere with the animals’ normal behavior, researchers reported November 15 at the annual meeting of the Society of Environmental Toxicology and Chemistry North America. Birds can take in these smaller doses by preening slightly greasy feathers or eating contaminated food, for example.

Big oil spills, such as the 2010 Deepwater Horizon disaster, leave a trail of dead and visibly oily birds (SN: 4/18/15, p. 22). But incidents like last week’s 5,000-barrel spill from the Keystone pipeline — and smaller spills that don’t make national headlines — can also impact wildlife, even if they don’t spur dramatic photos.
To test how oil snacks might affect birds, researchers fed zebra finches small amounts of crude oil or peanut oil for two weeks, then analyzed the birds’ blood and behavior. Birds fed the crude oil were less active and spent less time preening their feathers than birds fed peanut oil, said study coauthor Christopher Goodchild, an ecotoxicologist at Oklahoma State University in Stillwater.

Oil-soaked birds will often preen excessively to try to remove the oil, sometimes at the expense of other important activities such as feeding. But in this case, the birds didn’t have any crude oil on their feathers, so the decrease in preening is probably a sign they’re not feeling well, the researchers say.

Exactly how the oil affects the birds’ activity levels isn’t clear. Researchers suspected that oil might deprive birds of oxygen by affecting hemoglobin, which carries oxygen in the blood. Blood tests didn’t turn up any evidence of damaged hemoglobin proteins but did find some evidence that oil-sipping birds might be anemic, Goodchild said. At the higher of two crude oil doses, birds’ blood contained less hemoglobin per red blood cell, a sign of anemia.
The findings, while preliminary, add to a growing pile of evidence that estimates of the number of animals impacted by oil spills might be too low. For instance, even a light sheen of oil on sandpipers’ wings makes it harder to fly, costing birds more energy, a different group of researchers reported earlier this year. That could affect everything from birds’ daily movements to long-distance migration.

Movies and other media are full of mixed messages about the risks and rewards of building machines with minds of their own. For every manipulative automaton like Ex Machina’s Ava (SN: 5/16/15, p. 26), there’s a helpful Star Wars droid. And while some tech titans such as Elon Musk warn of the threats artificial intelligence presents, others, including Mark Zuckerberg, dismiss the doomsayers.

AI researcher Toby Walsh’s Machines That Think is for anyone who has heard the hype and is seeking a critical assessment of what the technology can do — and what it might do in the future. Walsh’s conversational style is welcoming to nonexperts while his endnotes point readers to opportunities for deeper dives into specific aspects of AI.
Walsh begins with a history of AI, from Aristotle’s foundation of formal logic to modern facial-recognition systems. Excerpts from computer-composed poetry and tales of computers trouncing humans at strategy games (SN: 11/11/17, p. 13) are a testament to how far AI has come. But Walsh also highlights weaknesses, such as machine-learning algorithms’ reliance on so much data to master a single task.

This 30,000-foot view of AI research packs a lot of history, as well as philosophical and technical explanation. Walsh personalizes the account with stories of his own programming experiences, anecdotes about AI in daily life — like his daughter’s use of Siri — and his absolute, unapologetic love of puns.

Later in the book, Walsh speculates about technical hurdles that may curb further AI development and legal limits that society may want to impose. He also explores the societal impact that increasingly intelligent computers may have.
For instance, Walsh evaluates how likely various jobs are to be outsourced to AI. Some occupations, like journalist, will almost certainly be automated, he argues. Others, like oral surgeon, are probably safe. For future job security, Walsh recommends pursuing careers that require programming acumen, emotional intelligence or creativity.

AI also has the potential to revolutionize warfare. “Like Moore’s law, we are likely to see exponential growth in the capabilities of autonomous weapons,” Walsh writes. “I have named this ‘Schwarzenegger’s law’ to remind us of where it will end.” Walsh isn’t resigned to a Terminator-like future, though. If governments ban killer robots and arms developers use automation to enhance defensive equipment, he believes military AI could actually save many lives.

In fact, Walsh argues, all aspects of AI’s future impacts are in our hands. “Artificial intelligence can lead us down many different paths, some good and some bad,” he writes. “Society must choose which path to take.”