China's mixed martial arts (MMA) athlete Zhang Weili has once again proven that she's the best women's MMA strawweight fighter in the world with a unanimous decision win over Amanda Lemos in the co-main event at the UFC 292 on August 20.

Currently in Beijing after the fight, in which she defended her title for the first time since her second championship win, Zhang is now focused on blending Chinese culture into her future tactics. 

Zhang applauded her opponent's tenacity, noting that credit is due to Lemos' persistence.

"There were a few times when I would see her eyes close when I was punching her, but later her eyes would open up again. I thought that her willpower was great," Zhang told the Global Times in an interview.

In Zhang's view, Lemos, known for her jiu-jitsu skills, is one of the most tenacious opponents she has encountered in recent years, and if the roles were reversed, she doubts she would have withstood such an onslaught of heavy punches. 

"Nearly everyone thinks that I'm poor at ground skills, but I actually won the first 10 matches of my career on the ground," Zhang noted as her win came thanks to her overpowering ground-fighting skills, which involves hand-to-hand combat, against Lemos.

As far as the moniker "hexagon warrior" bestowed upon her by fans for her well-rounded skill set, Zhang considers as a humbling gesture.

"I'm yet to be a hexagon warrior but I'm trying my best to be one," Zhang said. "I think my skills, either ground skills or stand-up combat skills or agility, still need to be honed."

Tactic without tactics

She said the tactic employed against Lemos was to wrap around her "like water" and not give her too much space in any aspect. Using the "tactic without tactics" formula allows her better control of the situation.

The 34-year-old, who has dominated in nearly all of her matches outside of her two losses to Rose Namajunas of the US, has woven the tapestry of Chinese culture into her fighting approach beyond the octagon.

"Now I fight by using a tactic which does not involve any specific tactics," Zhang told the Global Times. 

While on the face of it, Zhang's approach may appear strange, it is credited to the concept "Be water, my friend," famously coined by martial artist Bruce Lee, noting this philosophy guides her movements, emphasizing fluidity and adaptability in the face of adversity.

"I learned this concept at a very young age but it wasn't until recent years that I have developed a deeper understanding of what 'be water' means, which I can blend it into my tactics rather than previously trying to stick to one planned tactic," Zhang said. 

She describes her fighting style as possessing both fluid and solid qualities, allowing her to be agile and efficient. Her use of traditional Chinese martial arts principles, such as the balance of yin, which means something of darkness, and yang, which means life and brightness, has given her a unique edge in the ring. 

"I have benefited a lot from Chinese culture. I hope more people can learn from it and then improve themselves. It's more about studying and learning how to comprehend," she told the Global Times. 

"It's important to learn from what the ancestors have left us, such as sincerity and modesty, and know how to be respectful and grateful," said Zhang. 

Rose to fame

Born in Handan, a city in North China's Hebei Province, Zhang's formative years were characterized by discipline and dedication. 

Zhang was introduced to martial arts at the age of 12. Little did they know that this early influence of modesty and discipline would set the stage for a remarkable athletic journey.

It was not common for girls to seriously pursue martial arts in China, but Zhang's passion burned brighter than the obstacles in her path. She trained diligently, determined to become a skilled fighter.

But it was her entry into the Ultimate Fighting Championship that truly catapulted her into the MMA spotlight. 

Zhang's rise to prominence has not only made her a symbol of hope and empowerment for aspiring fighters in China but also a trailblazer in women's MMA globally. Her influence extends far beyond the ring, as she continues to inspire the next generation of fighters, both in China and around the world. 

Zhang spent some time in 2022 learning tai chi from a master in her hometown.

"When I would use force while wrestling, it would always feel especially hard, but now with the idea of tai chi, everything is curved - there is rigidity and flexibility," Zhang said, noting that when incorporating Tai Chi into her training routine made her realize that wrestling also had soft qualities.

Zhang's winning form has also triggered an increasing number of young people participating in MMA in China. 

It also gives pause to those who claim that championships are only built on the failures of many, which is antithetical to traditional Chinese culture's advocacy for securing victories through subduing opponents without fighting rather than an emphasis on the eventual victory.

"I don't think it is accurate to say that championships are based on the failures of many," Zhang told the Global Times. 

"As long as you practice, at the very least, you will learn a lot from it," she said.

Even since the eruption of the recent Israeli-Palestine conflict, China has taken a proactive role in de-escalation, collaborating with the international community to spare efforts to bring an end to the fighting, safeguard civilian lives, and provide humanitarian aid.

In recent days, the Chinese Government's Special Envoy on the Middle East Issue Zhai Jun has made relentless trips to Middle Eastern countries including Egypt, Qatar, the United Arab Emirates (UAE), Saudi Arabia, and Jordan in a diplomatic effort to de-escalate the situation and ease hostilities. 

Meanwhile, in response to the worsening humanitarian situation in the Gaza Strip, the China International Development Cooperation Agency has pledged an additional 15 million yuan ($2.05 million) in emergency humanitarian supplies. This aid aims to assist those affected by the conflict, in addition to previously allocated $1 million in cash assistance through the Palestinian National Authority and the UN Relief and Works Agency for Palestinian Refugees in the Near East.

During a meeting with Zhai on Sunday in Amman, the capital of Jordan, Commissioner-General of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) Philippe Lazzarini, noted that the UNRWA regards China as an important partner, thanks China for its long-standing political support and financial assistance to the UNRWA, appreciates China's emergency humanitarian assistance to Gaza since the conflict, and is willing to strengthen cooperation with China to alleviate the humanitarian crisis in Gaza as soon as possible.

UNRWA, which was founded in 1949, is mandated to provide humanitarian assistance to Palestinian refugees. The organization relies on voluntary contributions to finance its operations.

At the Wednesday media briefing, China's Foreign Ministry Spokesperson Wang Wenbin said that "China has no selfish interests in the Palestinian-Israeli issue. We stand for the protection of civilians, a ceasefire and an end to fighting, the opening of humanitarian relief corridors, the prevention of a greater humanitarian crisis, the resumption of political dialogue and negotiation, and the return of the Palestinian issue to the right track of the two-state solution so as to achieve lasting peace and stability in the Middle East."

"As [China assumes] the rotating presidency of the UN Security Council this month and a responsible member of the international community, China will continue to work with the international community to ease the situation, protect civilians, advance humanitarian assistance, and resume peace talks," he said.

Dutch semiconductor equipment maker ASML started its 2024 campus recruitment program in China on Tuesday, with key positions related to scanners, e-beams and computational lithography.

The recruitment program this year, which is about the same size as that of last year, shows that the company is staying committed to the Chinese market, despite geopolitical headwinds that are affecting the global chip supply chain, a Chinese analyst said.

The company, which had net global sales revenue of 21.2 billion euros ($22.46 billion) in 2022, said it plans to hire some 200 professionals this year, roughly the same as last year, indicating steady growth in its Chinese business.

"The continuous hiring by ASML at this critical juncture implies the company's confidence in China's vast market and its unwillingness to lose market share here," Xiang Ligang, director-general of the Beijing-based Information Consumption Alliance, told the Global Times on Sunday.

"Even if sales for certain machines are blocked in the future, the company will still need employees to maintain its existing fleet of lithography machines in China and service customers," Xiang said. 

Under new Dutch export control regulations that took effect on September 1, the company is required to have licenses to continue shipments of chip tools to China. 

The company said it has the required licenses for China-bound shipments of the NXT:2000i and subsequent systems until the end of 2023.

On June 30, the Dutch government announced a ministerial order restricting exports of certain advanced semiconductor equipment, a move widely believed to target China due to pressure from the US.

ASML sells about 80 Deep Ultraviolet Lithography machines to China each year, accounting for around 15 percent of the company's revenue, an analyst said.

Isolating China completely through export controls is not a viable approach, ASML CEO Peter Wennink emphasized during an interview.

China and the Netherlands have maintained communication on chip equipment export controls and China has urged the Netherlands not to abuse export control measures regarding semiconductor products, according to China's Ministry of Commerce.

In 2000, the Dutch giant that makes lithography machines established ASML China and built its first office in the country. After 23 years of development, the company now has more than 1,600 employees and 16 offices in China.

A roughly 27-million-year-old fossilized skull echoes growing evidence that ancient whales could navigate using high-frequency sound.

Discovered over a decade ago in a drainage ditch by an amateur fossil hunter on the South Carolina coast, the skull belongs to an early toothed whale. The fossil is so well-preserved that it includes rare inner ear bones similar to those found in modern whales and dolphins. Inspired by the Latin for “echo hunter,” scientists have now named the ancient whale Echovenator sandersi.
“It suggests that the earliest toothed whales could hear high-frequency sounds,” which is essential for echolocation, says Morgan Churchill, an anatomist at the New York Institute of Technology in Old Westbury. Churchill and his colleagues describe the specimen online August 4 in Current Biology.

Modern whales are divided on the sound spectrum. Toothed whales, such as orcas and porpoises, use high-frequency clicking sounds to sense predators and prey.

Filter-feeding baleen whales, on the other hand, use low-frequency sound for long-distance communication. Around 35 million years ago, the two groups split, and E. sandersi emerged soon after.

CT scans show that E. sandersi had a few features indicative of ultrasonic hearing in modern whales and dolphins. Most importantly, it had a spiraling inner ear bone with wide curves and a long bony support structure, both of which allow a greater sensitivity to higher-frequency sound. A small nerve canal probably transmitted sound signals to the brain.
“Scientists have long suspected that early toothed whales could produce the high-frequency sounds needed for echolocation based on features on their skulls,” says Travis Park of Monash University in Melbourne, Australia. Previous work points to early toothed whales sensing those high frequencies. Park and his colleagues reported in April in Biology Letters the discovery of a 26-million-year-old lone ear bone showing signs of high-frequency hearing. But it wasn’t connected to a skull and, thus, couldn’t be tied to a specific whale species.

Tracing inner ear features in CT scans of 24 ancient and modern whales, including E. sandersi, plus two hippos, whales’ closest living relatives, Churchill’s team ups the ante. Because primitive versions of the bony spiral and nerve canal appeared before the first known toothed whale, the researchers suggest that rudimentary high-frequency hearing might have emerged in the common ancestor of toothed and baleen whales at least 43 million years ago. If so, baleen whales lost their high-frequency hearing at some point. Determining whether that’s truly the case requires more analysis and a wider array of fossil data, says Park, who’s unconvinced.

But there is growing consensus that the first toothed whales could hear and produce sounds at high-frequency ranges. The skull of a 28-million-year-old toothed whale also suggests that such animals could make high-frequency calls (SN: 4/19/14, p. 6). “The next step is to look at when their brains got big enough to process echolocation signals,” says Nicholas Pyenson, a paleobiologist at the Smithsonian’s National Museum of Natural History who was not affiliated with the study. “This is great, but there’s more to be done.”

Sea ice around the North Pole has reached its second-lowest low on record, tying with 2007, scientists at NASA and the National Snow and Ice Data Center announced September 15.

Arctic sea ice reached its expected low point for the year on September 10, bottoming out at an area of 4.14 million square kilometers. That’s well below the 1981 through 2010 average of 6.22 million square kilometers, though above the record-lowest extent of 3.39 million square kilometers, set in 2012.

The silver-medal finish came after a summer of relatively cool temperatures, cloudy skies and stormy weather — conditions that typically limit sea ice shrinkage. The lack of ice probably arose from a poor starting position: The melt season began with the smallest maximum sea ice extent on record.

Shrinking sea ice can speed up warming, threaten Arctic species and spread pollution.

Apes understand what others believe to be true. What’s more, they realize that those beliefs can be wrong, researchers say. To make this discovery, researchers devised experiments involving a concealed, gorilla-suited person or a squirreled-away rock that had been moved from their original hiding places — something the apes knew, but a person looking for King Kong or the stone didn’t.

“Apes anticipated that an individual would search for an object where he last saw it, even though the apes knew that the object was no longer there,” says evolutionary anthropologist Christopher Krupenye.
If this first-of-its-kind finding holds up, it means that chimpanzees, bonobos and orangutans can understand that others’ actions sometimes reflect mistaken assumptions about reality. Apes’ grasp of others’ false beliefs roughly equals that of human 2-year-olds tested in much the same way, say Krupenye of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and his colleagues.

Considering their targeted gazes during brief experiments, apes must rapidly assess others’ beliefs about the world in wild and captive communities, the researchers propose in the October 7 Science. Understanding the concept of false beliefs helps wild and captive chimps deceive their comrades, such as hiding food from those who don’t share, Krupenye suggests.

Experiments included 41 apes — 19 chimps, 15 bonobos and seven orangutans. These animals had been born in captivity and lived in open enclosures at research centers in Germany and Japan. Apes watched two short videos designed to grab their attention. In one, a person in a King Kong gorilla suit hides in one of two haystacks while a man watches. After the man leaves through a door, King Kong runs away. Then the man returns and looks for King Kong. In a second video, a man returns for a stone that King Kong stole from him and hid in one of two boxes while the man watched. During the man’s absence, however, King Kong runs off with the stone or, in another version, moves the stone from one box to the other.

A camera equipped with an eye-tracking sensor revealed that, when the man in these videos returned, apes usually looked first at where King Kong or the stone had initially been hidden. They also spent more time looking at those initial locations than at any other spots in the videos. Those behaviors indicate that the apes assumed the man would return to those same spots based on where he had last seen what he was looking for. Of 29 animals that viewed both videos, gazes of 23 indicated that they expected the man in one or both scenarios to hold a false belief, the researchers say.
Krupenye’s team shows for the first time that a nonhuman animal can track others’ false beliefs, agrees psychologist Amanda Seed of the University of St. Andrews in Fife, Scotland. But it has yet to be demonstrated that apes, like humans, can act on such knowledge, say by hiding food from others, she adds. It’s also unclear whether, aside from knowing where an observer will look for an item, apes truly know that the object is no longer there, Seed says. Further experiments could see if apes express surprise upon seeing an observer find an item hidden in its original location after it had been moved, she suggests.

An ability to infer what others are thinking, dubbed “theory of mind” by psychologists (SN Online: 3/27/13), likely evolved in ancient ancestors of humans and apes, writes primatologist Frans de Waal of Emory University in Atlanta in the same issue of Science. Those ancestors lived in increasingly complex communities where it paid to predict accurately how others would behave, he proposes.

Yale University psychologist Laurie Santos isn’t so sure apes track false beliefs. Previous research has consistently indicated that no nonhuman animals monitor others’ beliefs, even on tasks similar to those used by Krupenye’s team, Santos says. In the new study, she adds, apes may have realized that an observer was ignorant about an object’s new location but not that he had false expectations about where to find it.

Krupenye disagrees. “The apes specifically anticipated that the actor in the video would search for an object where we humans know the actor falsely believed the object to be,” he says.

Clearing tropical forests may raise the risk of people being exposed to a gruesome disease called Buruli ulcer, a new study suggests.

Mycobacterium ulcerans, the bacteria that cause Buruli skin lesions and bone deformities, can thrive in a wide range of wild creatures, especially tiny insects grazing on freshwater algae, says Aaron Morris, now at Imperial College London. Surveying more than 3,600 invertebrates and fish from both pristine forests and cleared land in French Guiana, Morris and colleagues found the bacteria flourishing in altered landscapes. As species are lost from once-complex food webs, there’s an intermediate zone where bacteria-friendly species thrive, Morris and colleagues propose online December 7 in Science Advances.
When people push into tropical forests to build farms, roads and towns, the food web of the forest grows simpler, Morris says. Aquatic predators that once kept smaller predators and grazers in check have dwindled, the analysis suggests. This shift in the food web allows some grazers that bacteria multiply abundantly in to thrive in the environment. Thus people might face more risk of picking up the disease. (The exact routes of transmission aren’t clear, according to the U.S. Centers for Disease Control and Prevention.)

Yet the relationship between forest loss and bacterial boom times isn’t a straight line, the researchers found. As people change the landscape even more drastically toward urbanization, the niches for the bacteria-carriers appears to start shrinking again. This may mean that some of the bacteria’s favorite hosts are dwindling away, too.

Other work has examined the way that landscape change affects people’s risks of catching infectious diseases, says Kate Jones of University College London, who has studied Lassa fever in Africa. Yet she cautions that recent research suggests that the interplay of infectious disease and disturbance depends strongly on the location. Some evidence has linked degraded ecosystems to rising numbers of small rodents that spread, for instance, Lyme disease. But in cases with diseases spread by monkeys and apes, their habitat needs mean they tend to be among the first animals to disappear as people take over land, taking particular disease risks with them.

Just how the rise in bacteria for Buruli ulcer translates into numbers of human cases will take more study. The new study focused on the animals and landscape and did not look at human prevalence of the disease. Worldwide, some 5,000 to 6,000 new cases of Buruli ulcer are reported each year from a total of 15 countries, says the CDC. The disease is also found in at least 18 more countries not included in the statistics. Buruli ulcer can occur in temperate as well as tropical regions but is especially a risk for children and young teens in sub-Saharan Africa.

Long before humans domesticated other animals, we may have domesticated ourselves.

Over many generations, some scientists propose, humans selected among themselves for tameness. This process resulted in genetic changes, several recent studies suggest, that have shaped people in ways similar to other domesticated species.

Tameness, says evolutionary biologist and primatologist Richard Wrangham of Harvard University, may boil down to a reduction in reactive aggression — the fly-off-the-handle temperament that makes an animal bare its teeth at the slightest challenge. In this sense, he says, humans are fairly tame. We might show great capacity for premeditated aggression, but we don’t attack every stranger we encounter.
Sometime in the last 200,000 years, humans began weeding out people with an overdose of reactive aggression, Wrangham suggests. Increasingly complex social skills would have allowed early humans to gang up against bullies, he proposes, pointing out that hunter-gatherers today have been known to do the same. Those who got along, got ahead.

Once animals have been selected for tameness, other traits tend to follow, including reshaping of the head and face. Humans even look domesticated: Compared with Neandertals’, our faces are shorter with smaller brow ridges, and males’ faces are more similar to those of females.
Selecting for less-aggressive humans could have also helped us flourish as a social species, says Antonio Benítez-Burraco, who studies language evolution at the University of Huelva in Spain. The earliest Homo sapiens were becoming capable of complex thought, he proposes, but not yet language. “We were modern in the sense of having modern brains, but we were not modern in behavior.”
Once humans began to self-­domesticate, though, changes to neural crest cells could have nudged us toward a highly communicative species. Something similar happens in songbirds: Domesticated birds have more complex songs than their wild counterparts. What’s more, self-domestication may be more common than once thought. Bonobos, Wrangham notes, live in peaceful groups compared with closely related, but more violent, chimpanzees. If humans took steps to domesticate themselves, perhaps they weren’t the only ones.

Give Homo naledi credit for originality. The fossils of this humanlike species previously revealed an unexpectedly peculiar body plan. Now its pockmarked teeth speak to an unusually hard-edged diet.

H. naledi displays a much higher rate of chipped teeth than other members of the human evolutionary family that once occupied the same region of South Africa, say biological anthropologist Ian Towle and colleagues. Dental damage of this kind results from frequent biting and chewing on hard or gritty objects, such as raw tubers dug out of the ground, the scientists report in the September American Journal of Physical Anthropology.
“A diet containing hard and resistant foods like nuts and seeds, or contaminants such as grit, is most likely for H. naledi,” says Towle, of Liverpool John Moores University in England.

Extensive tooth chipping shows that “something unusual is going on” with H. naledi’s diet, says paleoanthropologist Peter Ungar of the University of Arkansas in Fayetteville. He directs ongoing microscopic studies of H. naledi’s teeth that may provide clues to what this novel species ate.
Grit from surrounding soil can coat nutrient-rich, underground plant parts, including tubers and roots. Regularly eating those things can cause the type of chipping found on H. naledi teeth, says paleobiologist Paul Constantino of Saint Michael’s College in Colchester, Vt. “Many animals cannot access these underground plants, but primates can, especially if they use digging sticks.”
H. naledi fossils, first found in South Africa’s subterranean Dinaledi Chamber and later a second nearby cave (SN: 6/10/17, p. 6), came from a species that lived between 236,000 and 335,000 years ago. It had a largely humanlike lower body, a relatively small brain and curved fingers suited for climbing trees.

Towle’s group studied 126 of 156 permanent H. naledi teeth found in Dinaledi Chamber. Those finds come from a minimum of 12 individuals, nine of whom had at least one chipped chopper. Two of the remaining three individuals were represented by only one tooth. Teeth excluded from the study were damaged, had not erupted above the gum surface or showed signs of having rarely been used for chewing food.

Chips appear on 56, or about 44 percent, of H. naledi teeth from Dinaledi Chamber, Towle’s team says. Half of those specimens sustained two or more chips. About 54 percent of molars and 44 percent of premolars, both found toward the back of the mouth, display at least one chip. For teeth at the front of the mouth, those figures fell to 25 percent for canines and 33 percent for incisors.

Chewing on small, hard objects must have caused all those chips, Towle says. Using teeth as tools, say to grasp animal hides, mainly damages front teeth, not cheek teeth as in H. naledi. Homemade toothpicks produce marks between teeth unlike those on the H. naledi finds.

Two South African hominids from between roughly 1 million and 3 million years ago, Australopithecus africanus and Paranthropus robustus, show lower rates of tooth chipping than H. naledi, at about 21 percent and 13 percent, respectively, the investigators find. Researchers have suspected for decades that those species ate hard or gritty foods, although ancient menus are difficult to reconstruct (SN: 6/4/11, p. 8). Little evidence exists on the extent of tooth chipping in ancient Homo species. But if H. naledi consumed underground plants, Stone Age Homo sapiens in Africa likely did as well, Constantino says.

In further tooth comparisons with living primates, baboons — consumers of underground plants and hard-shelled fruits — showed the greatest similarity to H. naledi, with fractures on 25 percent of their teeth. That figure reached only about 11 percent in gorillas and 5 percent in chimpanzees.

Human teeth found at sites in Italy, Morocco and the United States show rates and patterns of tooth fractures similar to H. naledi, he adds. Two of those sites date to between 1,000 and 1,700 years ago. The third site, in Morocco, dates to between 11,000 and 12,000 years ago. People at all three sites are suspected to have had diets unusually heavy on gritty or hard-shelled foods, the scientists say.

Chips mar 50 percent of H. naledi’s right teeth, versus 38 percent of its left teeth. That right-side tilt might signify that the Dinaledi crowd were mostly right-handers who typically placed food on the right side of their mouths. But more fossil teeth are needed to evaluate that possibility, Towle cautions.