爱上海龙凤

Editor's Note:

"Cognitive Warfare" has become a new form of confrontation between states, and a new security threat. With new technological means, it sets agendas and spreads disinformation, so as to change people's perceptions and thus alter their self-identity. Launching cognitive warfare against China is an important means for Western anti-China forces to attack and discredit the country. Under the manipulation of the US-led West, the "China threat theory" has continued to foment.

Some politicians and media outlets have publicly smeared China's image by propagating false narratives such as the "China economy collapse theory" and "China virus threat theory," in an attempt to incite and provoke dissatisfaction with China among people in certain countries.

These means all serve the seemingly peaceful evolution strategy of the US to contain China's rise and maintain its hegemony.

The Global Times is publishing a series of articles to systematically reveal the intrigues of the US-led West's cognitive warfare targeting China, and expose its lies and vicious intentions, in an attempt to show international readers a true, multi-dimensional, and panoramic view of China.

This is the eighth installment in the series. In this story, the Global Times looks into how the Group of Seven (G7) attempts to tarnish China's image and jeopardize the peace and tranquility in the region with various cognitive warfare tricks.
The Group of Seven (G7) has been hyping the South China Sea issue synchronously under the US leadership. In the latest statement released earlier this month, the G7 once again claimed to oppose China's militarization activities in the South China Sea, and, not surprisingly, mentioned the so-called South China Sea arbitration.

These cliché accusations, as well as G7's repeated hypes of the South China Sea issue, have become "a part of the group's carefully planned cognitive warfare against China," said some Chinese observers reached by the Global Times. They pointed out that, through consistently creating strife in the South China Sea, provoking conflict between China and related countries in the region, and even inciting the latter to initiate troubles against China, the G7 attempts to harm China's sovereignty, denigrates China's international image, and jeopardize the peace and tranquility in this region.

The media disinformation campaign is far from the only means used, the Global Times found. Within the framework of the G7, governments, legal professions, media outlets, and academic institutes have largely participated in this cognitive war targeting China in terms of the South China Sea issue.

Murky blue sea interference

The G7, as one of the most powerful and influential intergovernmental political and economic groups in the West, is very good at attacking China over the South China Sea issue in the form of a joint declaration or statement by government heads or top officials among its members, to delegitimize China's rights and interests in the South China Sea at superficially "official" and "formal" occasions.

Apart from the latest statement, the G7 has released several similar joint statements detailing its "concerns" over the South China Sea issue in 2023 alone.

On November 8, 2023, G7 foreign ministers released a statement in Tokyo, stating that they "remain seriously concerned about the situation in the East and South China Seas," and "strongly oppose any unilateral attempts to change the status quo by force or coercion." Similar sentiments were also seen in another statement released after they met in New York in September.

Earlier in May, the G7 also hyped China-related issues in the G7 Hiroshima Leaders' Communiqué and other documents adopted at the G7 Hiroshima Summit, including irresponsible comments on the situation in the Taiwan Straits, and accusations regarding regions like the South China Sea.

Uniformly, these statements mentioned the South China Sea arbitration, saying the award rendered by the Arbitral Tribunal in 2016 "is legally binding upon the parties to those proceedings, and a useful basis for peacefully resolving disputes between the parties."

The fact is that the arbitration, without actual legal effect, has been widely considered a political farce under the cloak of law, said scholars of boundary and marine studies.

"The South China Sea arbitration was conducted by an arbitral tribunal without jurisdiction in violation of the procedures set out in Articles 283 and 298 of the UNCLOS (United Nations Convention on the Law of the Sea). There is no basis in international law, and it (the arbitration) has no legal binding force on China," said Wu Wei, an associated professor in China Institute of Boundary and Ocean Studies of Wuhan University.

Wu said that in 2023 since the US and the Philippines released the "Joint Statement of the US-Philippines 2+2 Ministerial Dialogue" in April, the US-led G7 has further meddled in the South China Sea issue.

"At the level of international law, it has violated the DOC (Declaration on the Conduct of Parties in the South China Sea), the UNCLOS, and the basic principles of non-intervention in domestic affairs," she told the Global Times.

Similarly, the "Limits in the Seas No.150" report that the US Department of State released in January 2022, which said it "examines the maritime claims of the People's Republic of China in the South China Sea" based on the UNCLOS, was also no more than a political tool of attack by the US against China under the guise of law, observers commented.

"The US itself has not ratified the UNCLOS," noted Wu. "Washington's interference in the South China Sea issue has hindered the normal implementation of the Convention."
Hypes from media, academy community

G7 members have continually added fuel to the fire in the South China Sea issue, with Western media outlets amplifying their incendiary talking points. This year, US media outlets such as The New York Times, The Washington Post, and Time magazine have extensively reported on the maritime conflicts between China and the Philippines.

Throughout 2023, when the Philippine Coast Guard (PCG) stirred up trouble in the South China Sea, it contrived the accompaniment of local and Western media entities on many occasions, with mainstream Western media outlets such as the New York Times, NBC, and AFP being invited to join Philippine journalists. The Foreign Correspondents Association, representing foreign media in the Philippines, has also been in contact with the Philippine Department of Foreign Affairs and Department of Defense to coordinate journalists' boarding for interviews.

Presumably dissatisfied with journalists' inability to capture good photos on board, the US military has dispatched P-8A anti-submarine patrol aircrafts to assist the PCG in their resupply operations at Ren'ai Jiao (Ren'ai Reef). These aircrafts captured high-definition videos and photos, which were used for sensationalist purposes by Western countries and Philippine media outlets.

In an effort to assist the Philippines in its dispute with China, some third-party countries are seeking advice from their own think tanks. One notable case is that of Project Myoushu at Stanford University in the US, which focuses on South China Sea security issues.

In February, Project Myoushu claimed that "China harasses PCG vessel." Subsequently, the PCG asserted that a Chinese ship had directed laser at the PCG, and the US State Department spokesperson, Ned Price, further fanned the flames by stating that the US stands with their ally in the face of alleged laser incidents.

In the context of the Chinese Foreign Ministry's clarification of the facts and emphasis on the Philippine side's baseless accusations, Raymond Powell, Project Myoushu team lead and a retired US Air Force colonel, claimed that the actions of Project Myoushu pushed the Philippine government to finally decide to expose the maritime dispute between China and the Philippines.

In addition, the Asia Maritime Transparency Initiative at the Center for Strategic and International Studies (CSIS) is also a major project in the US that focuses on researching the South China Sea issue.

Over the years, this project has repeatedly accused China of "disrupting the status quo" and "threatening regional security" when releasing information about China's rights protection and law enforcement activities in the South China Sea.

However, it selectively ignores unilateral actions such as island construction and militarization by other claimant countries in the disputed waters.

In recent discussions between several US and the Philippine think tanks, various ideas regarding the US-Philippines cooperation in occupying Ren'ai Jiao were generated. In terms of logistical support, some have suggested that Western military forces should assist the PCG in delivering supplies to the grounded vessel, or even consider airdropping them using military aircrafts.

Currently, the Philippines is intensifying its propaganda campaign in the South China Sea in collaboration with foreign media sources and think tanks, using various tactics to overstate the severity of the conflicts between China and the Philippines in the South China Sea. Behind this is a mindset of sensationalism, deliberately portraying China as aggressively attacking and bullying a smaller country - the Philippines, Peng Nian, vice president of the Regional National Research Institute at the Hainan Normal University, told the Global Times.

"The more they exaggerate and amplify these negative incidents, the more it seems beneficial for the Philippines and the West. It not only maligns China, but also magnifies the South China Sea issue, continuously attracting international attention," Peng said. However, in reality, apart from escalating tensions in the South China Sea, these performers are only deceiving themselves with the illusion of enhanced influence, he noted.

A 'test site' to suppress China

The South China Sea is another "test site" for some Western countries, including the G7, to isolate and contain China, said observers.

By constantly hyping the South China Sea issue, they try to influence the international community and the Chinese public to force the Chinese government to change its foreign policy, Chen Xiangmiao, director of the World Navy Research Center at the National Institute for South China Sea Studies, told the Global Times in a previous interview.

To safeguard China's legal interests in the South China Sea, and to contribute more to the peaceful and stable development of the region, Wu from Wuhan University suggested that China should actively take countermeasures from multiple aspects, which include hosting summits for peaceful consultations between China and ASEAN (Association of Southeast Asian Nations) countries on the South China Sea situation, further encouraging fishermen to conduct fishing operations in the region with more guaranteed protection.

"It's also necessary to further promote international law studies on the South China Sea issue, to gain more say for China in today's global international law community on topics regarding this region," Wu told the Global Times.

Gone are the days when a handful of Western countries could willfully meddle in other countries' internal affairs and manipulate global affairs, said the Chinese Foreign Ministry on May 20, in response to the G7 Hiroshima Leaders' Communiqué released that same day.

"The international community does not and will not accept the G7-dominated Western rules that seek to divide the world based on ideologies and values. Even less will it succumb to the rules of exclusive small blocs designed to serve 'America-first' and the vested interests of the few," it noted. "G7 needs to reflect on its behavior and change course."

Sikkim Urja Limited's 1,200-megawatt hydroelectric project Teesta-III at the Chungthang dam on river Teesta gave way on October 4, killing at least 94 people in the downstream areas of Sikkim and West Bengal. The devastation has reignited wide worries surrounding two of three India-built mega hydropower projects under construction in Bhutan, local newspaper The Hindu reported on October 15.

The collapse reinforced long-held doubts about India's large-scale hydroelectric projects under construction in Bhutan. India's assessment of the fragile geological zone in the Himalayas appears to have been inadequate, leading to significant safety risks, local media criticized.

Analysts told the Global Times that a series of infrastructure accidents in the India-China border area in recent years have exposed India's seeming inability to carry out infrastructure construction under the complex geological conditions in the Himalayas. However, in recent years, India has been attempting to "monopolize" infrastructure projects in some South Asian countries, which also shows India's attempt to counter China in the region.

India's capacity collapses again

Although the glacial lake outburst flood (GLOF) triggered the latest dam collapse, many Indian media outlets believe that catastrophe was more likely man-made.

Environmentalists have been criticizing the decision-making process of constructing a large number of hydropower projects in the geologically fragile southern foothills of the Himalayas, while politicians have also pointed out corruption issues during the projects' construction and operational management, especially flaws inherent in the duty alert mechanism.

Such doubts have raised concerns in Bhutan, which shares the southern foothills of the Himalayas with Sikkim.

"We need to re-look at the geological survey of the (Puna-I) dam because many things have changed in 15 years. There have been many reasons for the delay, including technical issues and COVID-19. The (soil) stabilization measures have not yielded the results they wanted. No expert will go on to do a project that is not technically, scientifically feasible," Bhutan's Prime Minister Lotay Tshering told The Hindu.

A note issued by the Bhutan's Central Electricity Authority (CEA) in February on the Puna-I, which was started in 2008 and is expected to be commissioned in 2024-25, said that "project commissioning is being delayed due to movement/subsidence of right bank hill mass in the dam area. Treatment/stabilization of the right bank and completion of dam work [is in] progress. The option of providing a barrage in the upstream and abandoning of the dam is being studied," according to the report.

Regarding the Puna-II, meant to be commissioned in 2023-24, the note said: "Poor geological strata and shear zone being encountered at [the] left bank and foundation of [the] dam and HRT (head race tunnel, a tunnel connecting water intake at [the] dam site to [the] power house for generation of hydroelectricity). Remedial measures are [in] progress."

The governments of Bhutan and India have tasked the Technical Coordination Committee (TCC) with reviewing and proposing a path forward for the 1,200mW Punatsangchhu Hydroelectric Project (Puna-I) dam. One of Bhutan's primary concerns revolves around the dam's safety and stability, given the potential significant downstream impacts of any dam failure on lives and properties, according to a report by Bhutan's national newspaper Kuensel.

Lin Minwang, deputy director at the Center for South Asian Studies at Fudan University, told the Global Times that India has made significant progress in infrastructure construction along the China-India border in recent years, but its infrastructure capabilities still cannot be compared with China's. Overall, the quality and construction capabilities of India's infrastructure are still relatively poor.

"In recent years, accidents have frequently occurred in the construction of bridges and tunnels by India along the border. Especially in some disputed areas, accidents of various kinds are common, and the construction quality is worrying. In fact, India lacks the ability to build large-scale infrastructure in the complex and fragile geological environment of the Himalayas," said Lin.

International landslide experts have pointed out it was a blunder to start a dam at the location that seems to be on the debris of past landslides.

Lin believes that India's massive construction and blind leap in the border areas are an "image project" by the Indian government. On one hand, it aims to deliberately create an image of India's strong resistance against China along the border to gain popularity in the upcoming elections. On the other hand, it is India's leverage to counter China in South Asia.

"However, it is evident that these construction projects are largely rushed, which inevitably leads to problems in construction quality. Several previous accidents are proof," said Lin.
Hard to find right partners

Despite its outdated infrastructure capacity, India's attempts at cornering the market in some South Asian countries, especially in the field of hydropower sector, where it has essentially monopolized the market, have been relentless. This has made it nearly impossible for some South Asian countries to introduce infrastructure companies from countries other than India into their own markets.

In the "13th Five-Year Plan" announced by the Bhutanese government, which is scheduled to start in 2024, almost all hydropower infrastructure projects will be undertaken by India.

"Among South Asian countries, whether it be Bhutan or Nepal, their choice of cooperation partners in their own infrastructure construction is largely restricted by India through legal or policy means," Lin explained. "India may even directly interfere in the internal affairs of these countries, demanding that they prioritize India in the bidding process for infrastructure projects or block them from commissioning bidders from other countries."

Specifically, in hydropower projects, taking Nepal as an example, India has proposed that it will not purchase electricity generated by hydropower stations built by other countries. However, India is actually a country with a severe shortage of electricity and energy, but it still uses this method to restrict the free development of Nepal's hydropower industry and force Nepal to reject the participation of other countries in its hydropower development, Lin said.

Lin suggested that Chinese infrastructure companies also often face pushback from India when entering the market in South Asian countries.

Chinese companies, for example, may be required by their international partners to have an Indian company as the project supervisor. These Indian supervisory companies tend to set unreasonably high standards for the projects and deliberately make it difficult for Chinese companies.

"Although Chinese infrastructure companies can typically cope with this, it will inevitably increase unnecessary costs. India often uses this method to hinder the entry of Chinese projects in South Asia," Lin said.

Strict control becomes commonplace

According to Bhutan's 2023-24 budget report, the 10 projects in the pipeline include the 600mW Kholongchhu hydroelectric project, Kuensel reported. Several projects, represented by the Kholongchhu hydroelectric project, are being carried out through a joint venture between India and Bhutan.

An anonymous expert on South Asian affairs told the Global Times that although these hydropower projects are officially managed through joint ventures, the engineering team, technical personnel, and even the management team are all Indian.

Lin further pointed out that the electricity generated by Bhutan's hydropower plants is not only used to meet Bhutan's own needs but also sold to India, allowing India to implement a strategy of total economic dependence by Bhutan. In addition, India has also exercised strict control over Bhutan's importation and exportation of goods, military defense, and other fields.

And in terms of diplomatic issues, India's interference in Bhutan is now commonplace. India controls Bhutan's foreign policy through various means. On the one hand, India limits Bhutan's establishment of diplomatic relations with other countries. Although India has repeatedly stated that Bhutan is an independent sovereign country, it remains incredibly vigilant regarding Bhutan's development of foreign relations and even opposes Bhutan's contacts with other countries, according to Sun Xihui, an associate research fellow with the National Institute of International Strategy at the Chinese Academy of Social Sciences.

Moreover, New Delhi interferes in China-Bhutan border negotiations. China has resolved most of its land border issues through negotiations since the 1950s, but is yet to complete its border talks with Bhutan, largely because India insists on representing Bhutan in the negotiations, while China hopes to directly engage with Bhutan, Sun noted.

The 25th Round of Boundary Talks between China and Bhutan was held in Beijing on October 23 and 24. The two sides held in-depth discussions on the boundary negotiations and noted the progress made through a series of Expert Group Meetings held since the 24th Round of Boundary Talks in 2016. The two leaders of the delegations commended the Expert Group for the work done and agreed to build on the positive momentum.

This meeting brings expectations for the establishment of official diplomatic ties between China and Bhutan.

Observers believe that despite the strong desire for diplomatic relations between the two countries, it is still difficult for China and Bhutan to complete border negotiations and establish diplomatic relations in the short term due to India's significant interference in Bhutan's internal affairs. However, it should be noted that this meeting undoubtedly injects new momentum into the successful completion of border negotiations and the promotion of the diplomatic processes between the two countries.

China has discovered a major oilfield in the central and northern parts of the Bohai Sea, with proven reserves of 104 million tons of oil, marking a monumental find in the region following a decade of search efforts, state-owned oil giant CNOOC announced on Monday.

The Qinhuangdao 27-3 oilfield, located 200 kilometers west of North China's Tianjin, is a 48.9-meter-thick oil layer in a 1,570-meter-deep well. With reserves exceeding 100 million tons of oil equivalent, testing has shown that the oilfield can produce about 110 tons of crude oil per day, showing promising exploration prospects.

With a regular extraction pace, the Qinhuangdao 27-3 oilfield could produce nearly 20 million tons of crude oil, enough to meet the daily transportation needs of a city with a population of a million people for over a decade. The refined asphalt could be used to build over 100,000 kilometers of four-lane highways, said Zhou Jiaxiong, a manager of CNOOC Tianjin branch.

The discovery of the Qinhuangdao 27-3 oilfield represents a successful practice of the company's new exploration strategy in the Bohai Sea. By changing the existing exploration approach, researchers identified the rich oilfield from a strike-slip fault zone in a complex structure area.

The Qinhuangdao 27-3 oilfield is the sixth 100 million-ton class oilfield discovered in the Bohai Sea since 2019 and the first in the central and northern parts of the sea in a decade, said Xu Changgui, deputy chief exploration engineer at CNOOC.

This discovery not only confirms the vast prospects for oil and gas exploration in the complex strike-slip fault zones of the Bohai Sea but also injects strong momentum into the development of China's offshore oilfields. It will play a significant role in securing China's energy supply and supporting the coordinated development of the Beijing-Tianjin-Hebei region, Xu added.

The discovery of the Qinhuangdao 27-3 oilfield is part of China's ongoing progress in the oil and gas sector, with CNOOC having made significant discoveries in recent years, including the Bozhong 26-6 deep-reservoir oilfield in the Bohai Sea and the Baodao 21-1 gas field in the western South China Sea.

On March 8, CNOOC announced China's first deep-water, deep-reservoir oilfield in the South China Sea, the Kaipingnan oilfield, which has proven reserves of 102 million tons of oil equivalent.

The US' escalating suppression of China's auto industry is a typical example of the politicization of trade and economic issues, experts said on Wednesday, warning that the US action will backfire and will hinder the development of the world's auto sector.

Republican US Senator Marco Rubio on Tuesday proposed sharply boosting tariffs on Chinese vehicle imports to stop the country "from flooding US auto markets," as part of Washington's latest effort to protect American automakers and auto workers, according to Reuters.

The report said that Rubio is also proposing legislation to extend tariffs to vehicles produced by Chinese automakers in other countries like Mexico and to limit subsidies for electric vehicles to those that meet stringent North American free trade rules.

"This is a manifestation of the US politicization of auto trading. After the 5G industry represented by Huawei, the US has made new-energy vehicles the second target to restrict China's technological development," Zhang Xiang, director of the Digital Automotive Intliu ernational Cooperation Research Center of the World Digital Economy Forum, told the Global Times on Wednesday.

Zhang noted that using so-called "information security," a completely trumped-up charge, the US has enhanced its suppression of Chinese automobiles, even though this is unilateral and violates international free trade norms.

"Blocking Chinese car imports will affect the progress of the US auto industry, as the US' new-energy technology is relatively backward compared with the level in China. If the Biden administration is determined to pursue this, raising tariffs will also have a big negative impact on the world's auto industry," Zhang warned.

Rubio's proposal is just a fresh move among an array of unreasonable US measures to suppress China's car industry. As the US elections in November approach, the administration of President Joe Biden and some leaders in Congress continue to speculate about restricting imports of Chinese electric vehicles.

On February 29, the White House said that the Biden administration is taking "unprecedented action" to protect Americans from the national security risks posed by internet-connected vehicles from countries of concern, including China.

US Commerce Secretary Gina Raimondo also peddled the "threat" theory against China's vehicles. "Cars these days are like an iPhone on wheels… You connect your phone and you might receive the text message… Imagine a world with 3 million Chinese vehicles on the roads of America, and Beijing can turn them off at the same time."

In response, Mao Ning, spokesperson from China's Foreign Ministry, said that Chinese-made cars are popular globally not due to the use of "unfair practices," but by emerging from fierce market competition with technological innovation and high quality.

"China's door has been open to global auto companies, including US auto companies that fully shared in the dividends of China's big market. By contrast, the US has engaged in trade protectionism and set up obstacles including discriminatory subsidy policies to obstruct access to the US market by Chinese-made cars. Such acts of politicizing economic and trade issues will only hinder the development of the US auto industry itself," Mao noted.

Back in 2004, archaeologists excavated two pits in northern China that looked a lot like homebrewing operations. Constructed between 3400 and 2900 B.C. by the Yangshao culture, each pit contained the remnants of a stove and assorted funnels, pots and amphorae.

Now, Jiajing Wang of Stanford University and colleagues report that the pottery shards contain residue and other evidence of starches, chemicals and plant minerals from specific fermented grains. The ancient beer recipe included broomcorn millet, barley, Job’s tears and tubers — that probably gave the beer a sweet flavor, the team writes May 23 in the Proceedings of the National Academy of Sciences.

The findings predate the earliest evidence of barley in China by around 1,000 years. Beer may have been consumed at social gatherings, and brewing, not agriculture, spurred the introduction of barley to China, the researchers argue.

Climate commotion
In “Changing Climate: 10 years after An Inconvenient Truth” (SN: 4/16/16, p. 22), Thomas Sumner reported on the progress scientists have made revising forecasts of the far-reaching effects of climate change — from extreme temperatures and sea level rise to severe drought and human conflict — in the decade since the Oscar-winning film’s release.

Reader response to the article was overwhelming, with hundreds of online comments. Some people enjoyed the in-depth look at climate change science, while others expressed skepticism about humans’ contribution to climate change and a general distrust of climate scientists.

“One of my goals for this article was to highlight that climate change research has itself changed over the last decade,” Sumner says. Scientists are still working to understand how the consequences of atmospheric warming will play out in the coming centuries. But one big message from the last decade of research is that the fundamentals have held up: Natural variability exists, says Sumner, but human activities are largely responsible for the current warming trend.
“The question now is what impact will human contributions have down the line and what should we do to prevent and mitigate those effects,” he says.
Plastic feast
Sarah Schwartz wrote about the discovery of a microbe, Ideonella sakaiensis, that chows down on a hard-to-degrade polymer in “This microbe makes a meal of plastic” (SN: 4/16/16, p. 5).
Online commenters were amazed by this new plastic-gobbling organism. “This is great news,” Dan said. “Our world would be doomed if there wasn’t a microbe able to do this.” Chuckawobbly wondered how long it takes I. sakaiensis to digest the plastic. And Jean Harlow was concerned about the potential by-products of worldwide plastic digestion. “The waste product would be a significant amount … of what?” she asked.

Researchers observed that I. sakaiensis almost completely degraded a thin film of polyethylene terephthalate, or PET, after six weeks in a laboratory. But when extracted from the bacterium, the proteins used to break down plastic begin working in about 18 hours.

I. sakaiensisappears to break PET into smaller molecules, like amino acids and carbon dioxide, says coauthor Kenji Miyamoto of Keio University in Yokohama, Japan. But it would probably be hard for the microbe to break down plastic in the outdoors because of its specific growth requirements, he says. Miyamoto envisions that it could be possible to use the specialized proteins in a closed environment to break PET down into molecules such as terephthalic acid— one of the plastic’s main building blocks, which seems benign in the environment.

Prairie dog predators
Herbivorous prairie dog mothers routinely kill baby ground squirrels that encroach on their territories, researchers found. Competition for resources may be a contributing factor to the killings, Susan Milius reported in “Killer prairie dogs make good moms” (SN: 4/16/16, p. 14).

One reader had other ideas. Audrey Boag wondered if prairie dog moms kill ground squirrels to protect their pups from predation or from diseases carried by the squirrels. “In either case, minimizing the number of ground squirrels would pay in lifetime biological fitness,” she wrote.

“We never observed a ground squirrel kill or injure an adult or juvenile prairie dog,” says study coauthor John Hoogland. “Perhaps such attacks sometimes occur underground.” Hoogland notes that the majority of ground squirrels killed by prairie dogs were juveniles, which are too small to be a threat.

One threat, however, is a species of disease-carrying flea that infests both animals. Hoogland found that prairie dog killers and their offspring had fewer fleas than nonkillers and their offspring, “but this trend was not significant,” he says.

Plastic cling wrap with nano-sized pores could give “cool clothes” a new meaning.

The material lets heat escape, instead of trapping it like traditional fabrics, Stanford University materials scientist Yi Cui and colleagues report in the Sept. 2 Science. It could help people keep cool in hot weather, Cui says, and even save energy by reducing the use of air conditioning.

“It’s a very bold new idea,” says MIT physicist Svetlana Boriskina, who wrote an accompanying commentary. Demand for the new material could be far-reaching, she says. “Every person who wears clothes could be a potential user of this product.”
Current cooling devices include wearable fans and wicking fabrics; both rely on evaporation to cool human skin. But skin also sheds heat in another way — as infrared radiation. Clothing holds this heat close to the body, Cui says. If infrared radiation could instead pass through fabric, he reasoned, people would feel a lot cooler.

But the fabric would have to be transparent only to infrared wavelengths. To visible light, it would need to be opaque. Otherwise, the clothing would be see-through.

Cui found just one material that satisfied both requirements: a commercially available plastic used in lithium-ion batteries. The material, called nanoporous polyethylene, or nanoPE, is a cling wrap‒like plastic that lets infrared radiation through. But unlike cling wrap, the material isn’t clear: It blocks visible light.

Tiny pores speckled throughout the fabric act as obstacles to visible light, Boriskina says. When blue light, for example, hits the pores, it scatters. So do other colors. The light “bounces around in different directions and scrambles together,” she says. To human eyes, the resulting color is white.

The pores scatter visible light because they’re both in the same size range: The diameters of the pores span 50 to 1,000 nanometers, and the wavelengths of visible light range from 400 to 700 nanometers. Infrared light emitted by the body has a much larger wavelength, 7,000 to 14,000 nanometers, so the plastic’s tiny pores can’t block it. To infrared light, the pores are barely bumps in the road, not barriers.
The pores are kind of like small rocks at a beach, Boriskina says. They’ll interfere with the motion of small waves, but big waves will wash right over.

Cui and colleagues tested nanoPE by laying it on a hot plate warmed up to human skin temperature — 33.5° Celsius. NanoPE raised the “skin” temperature by just 0.8 degrees(to 34.3° C). “But when you put on cotton, my God, it rose to 37,” Cui says. “It’s hot!”

The researchers also tried to make nanoPE more wearable than plastic wrap. They coated it with a water-wicking chemical, punched holes in it to make it breathable, and layered it with cotton mesh. Now, the team is working on weaving the fabric to make it feel more like traditional textiles.

“Within five years, I hope someone will start wearing it,” Cui says. “And within 10 years, I hope most people will be wearing it.”

Researchers have digitally unwrapped and read an ancient Hebrew scroll that’s so charred it can’t be touched without falling apart. It turns out the document contains the oldest known Biblical text outside of the roughly 2,000-year-old Dead Sea Scrolls, the investigators say.

Archaeologists discovered the scroll’s remnants in a synagogue’s holy ark during a 1970 excavation in Israel of En-Gedi, a Jewish community destroyed by fire around 600.

In a series of digital steps, slices from a 3-D scan of the En-Gedi scroll were analyzed to bring letters and words into relief on a pieced-together, virtual page. Those images revealed passages from the book of Leviticus written in ink on the scroll’s disintegrating sheets. Radiocarbon results date the scroll to approximately 300, making it the earliest copy of an Old Testament book ever found in a holy ark, scientists report September 21 in Science Advances.

This computerized recovery and conservation process can now be used to retrieve other ancient documents “from the brink of oblivion,” the researchers say.

DENVER — A period of skyrocketing global temperatures started with a bang, new research suggests.

Impact debris and evidence of widespread wildfires around eastern North America suggest that a large space rock whacked Earth around 56 million years ago at the beginning of the Paleocene-Eocene Thermal Maximum, also known as the PETM, a period of rapid warming and huge increases in carbon dioxide. The event is one of the closest historic analogs to modern global warming and is used to improve predictions of how Earth’s climate and ecosystems will fare in the coming decades.
Too little is known about the newfound impact to guess its origin, size or effect on the global climate, said geochemist Morgan Schaller of Rensselaer Polytechnic Institute in Troy, N.Y. But it fits in with the long-standing and controversial proposal that a comet impact caused the PETM. “The timing is nothing short of remarkable,” said Schaller, who presented the discovery September 27 at the Geological Society of America’s annual meeting.

The impact may have contributed to the rapid rise in CO2 by stirring carbon up into the atmosphere, but it was hardly the sole cause, said Sandra Kirtland Turner, a geochemist at the University of California, Riverside. Her own environmental simulations suggest that the influx of carbon that flooded Earth during the PETM probably took place over at least 2,500 years, far too drawn out to be caused by a single event, she said at the same meeting.

During the PETM, a massive influx of carbon flooded the atmosphere (SN: 5/30/15, p. 15) and Earth warmed by 5 to 8 degrees Celsius to temperatures much hotter than today. That carbon dump altered the relative abundance of different carbon isotopes in the atmosphere and oceans, leaving a signal in the sedimentary record.

While searching for that signal in roughly 56-million-year-old sediments from sites up and down the U.S. East Coast, Schaller spotted microscopic glassy spheres about the size of a dust mite. These specks resemble those blasted from previously identified large impact events. After switching from a black to a white sorting tray to more easily see the black debris, one of Schaller’s Rensselaer colleagues, micropaleontologist Megan Fung, discovered abundant charcoal pieces in the mix. That charcoal formed when wildfires sparked by the impact raged across the landscape, she proposed.

More evidence of the impact will help researchers to better constrain its location, scope and possible relationship to the start of the PETM, Schaller said.

Two more teeny moons might be lurking around Uranus. That’s in addition to the 27 we already know about. Fluctuations in the density of two of the planet’s dark rings, seen in radio data from the 1986 flyby of the Voyager 2 spacecraft, could be caused by unseen moonlets, Robert Chancia and Matthew Hedman, astronomers at the University of Idaho in Moscow, report online October 9 at arXiv.org.

At probably just 4 to 14 kilometers wide, both moons would be very difficult to detect in Voyager 2 images, the researchers report. New observations with ground-based telescopes might have better luck.