Coming amid the third China-Central Eastern European Countries Culture and Arts Carnival, traditional dances from all over Greece, such as ipirotikos, tsamiko, kalamatiano, sirtaki and ikariotiko, were performed on October 22 in Chaoyang Park, Beijing, by the Cultural Association "Peiros" dance troop from the municipality of Western Achaia.
The performance was aimed at preserving and transmitting cultural traditions and various aspects of Greek cultural heritage from generation to generation.
Along with the performances, videos showcased the beauty of Western Peloponnese, the birthplace of the Olympic Games, and informational materials were made available.
The eight-member dance group of the cultural association "Peiros" performed in Beijing as part of the third China-Central Eastern European Countries Culture and Arts Carnival, hosted by the Beijing Municipal Bureau of Culture and Tourism, Chaoyang District People's Government of Beijing Municipality, and organized by the Beijing Overseas Cultural Exchange Center, Chaoyang District Bureau of Culture and Tourism of Beijing Municipality.
China's shipbuilding industry achieved marked growth in 2023, as shipbuilding completions exceeded half of the global total, or reaching 50.2 percent, further solidifying the country's leading position in the shipbuilding sector, according to data released by the Ministry of Industry and Information Technology (MIIT) on Monday.
In 2023, China's shipbuilding completions totaled 42.32 million deadweight tons (dwt), representing an increase of 11.8 percent year-on-year. New orders amounted to 71.2 million dwt, a significant jump of 56.4 percent from last year. As of the end of December, the backlog of orders stood at 139.39 million dwt, which also saw an increase of 32 percent year-on-year, MIIT data showed.
In terms of global market share, three key indicators in China's shipbuilding industry, including completions, new orders received, and backlog of orders, had made significant progress, accounting for 50.2 percent, 66.6 percent, and 55.0 percent of the global total in terms of dwt, respectively. In terms of Compensated Gross Tonnage (CGT), these figures stood at 47.6 percent, 60.2percent, and 47.6 percent, respectively.
The growing figures allowed China's shipbuilding industry to maintain its leading position globally, with the local shipbuilding sector thriving despite a global demand drop.
Chinese shipbuilding companies maintain the leading position in global market competition. Among the top 10 shipbuilding firms with the most shipbuilding completions, five of them are from China.
The significant growth achieved by China's shipbuilding industry in 2023, despite the global downturn in demand, demonstrates the country's resilience and competitiveness in the sector. This is attributed to a combination of factors including advanced technology and green production.
China's shipbuilding industry achieved a breakthrough in the manufacturing of large cruise ships in 2023. The country's first domestically produced large cruise ship, the Adora Magic City, launched in June 2023 and embarked on its maiden commercial voyage on January 1, 2024.
To meet the demand for vehicle exports from local customers, several Chinese shipbuilding companies have started mass production of ro-ro- ships. Domestic ports are also improving related infrastructure. Taicang Port in East China's Jiangsu Province, invested over 2 billion yuan ($281 million) to build the largest automobile ro-ro- terminal, with an annual transport capacity of 1.3 million vehicles.
New market demand for environmentally friendly shipbuilding is being met in China. A Chinese shipbuilding company, Guangzhou Shipyard International Co, said that over 60 percent of its current orders are for methanol powered dual-fuel ships or liquefied natural gas fired dual-fuel models. Compared to traditional container ships, the ships can reduce carbon emissions by 20 percent while cutting 85 percent of nitrogen oxide and 99 percent of sulfur emissions.
A large-scale cemetery containing more than 200 tombs was recently discovered in Xianyang, Northwest China's Shaanxi Province. The tomb cluster was confirmed to be a burial place for the people of the Qin Dynasty (221BC-206BC).
Archaeologists found a total of 237 ancient tombs, excavated in Xianyang's Jiantan village, dated from the late Warring States Period (475BC-221BC) to the Qin period. According to the tombs' design, archaeologists were able to determine the area was used as a public cemetery.
Besides the prolific Qin tombs, 26 other tombs were also unearthed. They belong to other historical periods such as the Han (206BC-AD220), Tang (618-907), Northern Song (960-1127) and Ming (1368-1644) dynasties.
Seven additional tombs belong to the last imperial dynasty of China, the Qing (1644-1911), archaeologist Jia Zhengyu told the Global Times, noting that it was fascinating to see how this area has been "historically recognized by ancient Chinese people as a burial place."
"Although most of these tombs belong to the Qin dynasty, we still can see the continuity of Chinese burial traditions from the site," Jia told the Global Times.
Archaeologists noticed that the Qin tombs in the eastern and western parts of the site were very similar in terms of configuration and the types of burial objects unearthed from them.
Archaeologist Xue Ruiming told the Global Times that this arrangement reflects that a "planning system for burials" may have already been implemented by ancient Chinese. Xue also said that the discovery "reminds people of the Chinese belief in treating the deceased as if they were alive."
Other than tombs, a total of 878 cultural relics were also unearthed from the site. The funerary objects unearthed in the eastern areas are mainly artifacts made of clay, copper and iron. Those objects were commonly used by ancient people in everyday lives.
"As the burial objects were mainly practical in nature, this led us to be even more confident that the area was a public cemetery for common people," said Zhao Xuyang, deputy director of the Institute of Cultural Relics and Archaeology of Xianyang.
Although the site was not seen as high-grade, some burial objects discovered in the western part of the ancient cemetery still reveal the "tastes of ordinary people," Jia told the Global Times.
In addition to a copper mirror and a jade seal, 10 glazed pottery sheep sculptures were unearthed from the ruins. Such tiny sculptures were vividly engraved with patterns that were commonly seen on Chinese silk brocades. Zhao said that exquisite objects like these are rarely seen in tombs from the same period.
"The site is like a melting pot of different Chinese burial traditions. It also reveals the evolution of Chinese burial customs," Jia remarked.
Prior to the 2023 discovery, in 1995 and 2022, another 805 tombs were consecutively discovered in the local Ta'er Po area that is close to Xiantan village. Around 95 percent of the Ta'er Po tombs were also from the late Warring States and Qin periods.
The three discoveries confirm the "eastern suburb of Xianyang city was indeed an ancient cemetery," said Zhao, adding that by comparing tombs from the three excavations, researchers can better investigate their exact time periods.
A Neandertal child whose partial skeleton dates to around 49,000 years ago grew at the same pace as children do today, with a couple of exceptions. Growth of the child’s spine and brain lagged, a new study finds.
It’s unclear, though, whether developmental slowing in those parts of the body applied only to Neandertals or to Stone Age Homo sapiens as well. If so, environmental conditions at the time — which are currently hard to specify — may have reduced the pace of physical development similarly in both Homo species. This ancient youngster died at 7.7 years of age, say paleoanthropologist Antonio Rosas of the National Museum of Natural Sciences in Madrid and colleagues. The scientists estimated the child’s age by counting microscopic enamel layers that accumulated daily as a molar tooth formed.
Previous excavations uncovered the child’s remains, as well as fossils of 12 other Neandertals, at a cave site in northwestern Spain called El Sidrόn.
Much — but not all —of the Neandertal child’s skeleton had matured to a point expected for present-day youngsters of the same age, the scientists report in the Sept. 22 Science. But bones at the top and in the middle of the spine had not fully fused, corresponding to a stage of development typical of 4- to 6- year-olds today. Also, the ancient child’s brain was still growing at an age when living humans’ brains have nearly or fully reached adult size. Signs of bone tissue being reshaped on the inner surface of the child’s braincase pointed to ongoing brain expansion. Rosas’ team calculated that the youngster’s brain volume was about 87.5 percent of that expected, on average, for Neandertal adults.
Neandertals’ slightly larger brains relative to people today may have required more energy, and thus more time, to grow, the researchers suggest. And they suspect that the growth of Neandertals’ bigger torsos, and perhaps spinal cords, slowed the extinct species’ backbone development in late childhood.
Rosas’ new study “reinforces what should have been apparent for some time — that Neandertal growth rates and patterns, except for those related to well-known differences in [skeletal shape], rarely differ from modern human variations,” says paleoanthropologist Erik Trinkaus of Washington University in St. Louis.
But researchers need to compare the El Sidrόn child to fossils of H. sapiens youngsters from the same time or later in the Stone Age, Trinkaus adds. Relative to kids today, ancient human youth may display slower growth rates comparable to those of the Neandertal child, he suspects.
A mysterious group of microbes may be controlling the fate of carbon in the dark depths of the world’s oceans.
Nitrospinae bacteria, which use the nitrogen compound nitrite to “fix” inorganic carbon dioxide into sugars and other compounds for food and reproduction, are responsible for 15 to 45 percent of such carbon fixation in the western North Atlantic Ocean, researchers report in the Nov. 24 Science. If these microbes are present in similar abundances around the world — and some data suggest that the bacteria are — those rates may be global, the team adds. The total amount of carbon that Nitrospinae fix is small when compared with carbon fixation on land by organisms such as plants or in the sunlit part of the ocean, says Maria Pachiadaki, a microbial ecologist at Bigelow Laboratory for Ocean Sciences in East Boothbay, Maine, who is lead author on the new study. “But it seems to be of major importance to the productivity and health of the 90 percent of the ocean that is too deep and too dark for photosynthesis.” These bacteria likely form the base of the food web in much of this enigmatic realm, she says.
Oceans cover more than two-thirds of Earth’s surface, and most of those waters are in the dark. In the shallow, sunlit part of the ocean, microscopic organisms called phytoplankton fix carbon dioxide through photosynthesis. But in the deep ocean where sunlight doesn’t penetrate, microbes that use chemical energy derived from compounds such as ammonium or hydrogen sulfide are the engines of that part of the carbon cycle.
Little has been known about which microbes are primarily responsible for this dark ocean carbon fixation. The likeliest candidates were a group of ammonium-oxidizing archaea (single-celled organisms similar to bacteria) known as Thaumarchaeota because they are the most abundant microbes in the dark ocean.
But there was no direct proof that these archaea are the main fixers in those waters, says Pachiadaki. In fact, previous studies of carbon fixation in these depths suggested that ammonium-oxidizers weren’t performing the task quickly enough to match observations, she says. “The energy gained from ammonium oxidation is not enough to explain the amount of the carbon fixed in the dark ocean.” She and colleagues suspected that a different group of microbes might be bearing the brunt of the task. Nitrospinae bacteria that use the chemical compound nitrite were known to be abundant in at least some parts of the dark ocean, but the microbes weren’t well studied. So Pachiadaki’s team analyzed 3,463 genomes, or genetic blueprints, of single-celled organisms found in 39 seawater samples collected in the western North Atlantic Ocean, at depths ranging from “twilight” regions below about 200 meters to the ocean’s deepest zone below 9,000 meters. The team identified Nitrospinae as the most abundant bacteria, particularly in the twilight zone. Although still less abundant than the ammonium-oxidizing Thaumarchaeota, the nitrite-oxidizers are much more efficient at fixing carbon, requiring only a tiny amount of available nitrite.
And although scientists knew that these bacteria use nitrite to produce energy, the new study showed that the compound is the primary source of energy for the microbes. Marine microbiologist Frank Stewart of Georgia Tech in Atlanta says the study “exemplifies how advances in genomic methods can generate hypotheses about metabolism and ecology.” These findings suggest that scientists need to rethink how energy and materials cycle in the dark ocean, he says. “While this ocean realm remains underexplored, studies like this are models for how to close our knowledge gap.”
One of the strangest things about growing a human being inside your body is the alien sensation of his movements. It’s wild to realize that these internal jabs and pushes are the work of someone else’s nervous system, skeleton and muscles. Someone with his own distinct, mysterious agenda that often includes taekwondoing your uterus as you try to sleep.
Around the 10-week mark, babies start to bend their heads and necks, followed by full-body wiggles, limb movement and breathing around 15 weeks. These earliest movements are usually undetectable by pregnant women, particularly first-timers who may not recognize the flutters until 16 to 25 weeks of pregnancy. These movements can be exciting and bizarre, not to mention uncomfortable. But for the developing baby, these kicks are really important, helping to sculpt muscles, bones and joints. While pregnant women can certainly sense a jab, scientists have largely been left in the dark about how normal fetuses move. “It’s extremely difficult to investigate fetal movements in detail in humans,” says Stefaan Verbruggen, a bioengineer formerly at Imperial College London who recently moved to Columbia University in New York.
Now, using relatively new MRI measurements of entire fetuses wiggling in utero, researchers have tracked these kicks across women’s pregnancies. The results, published January 24 in the Journal of the Royal Society Interface, offer the clearest look yet at fetal kicking and provide hints about why these moves are so important. Along with bioengineer Niamh Nowlan, of ICL, and colleagues, Verbruggen analyzed videos of fetal kicks caught on MRI scans. These scans, from multiple pregnant women, included clear leg kicks at 20, 25, 30 and 35 weeks gestation. Other MRI scans provided anatomical details about bones, joints and leg sizes. With sophisticated math and computational models, the researchers could estimate the strengths of the kicks, as well as the mechanical effects, such as stresses and strains, that those kicks put on fetal bones and joints. Kicks ramped up and became more forceful from 20 to 30 weeks, the researchers found. During this time, kicks shifted the wall of the uterus by about 11 millimeters on average, the team found. But by 35 weeks, kick force had declined, and the uterus moved less with each kick, only about 4 millimeters on average. (By this stage, things are getting pretty tight and tissues might be stretched taut, so this decrease makes sense.) Yet even with this apparent drop in force, the stresses experienced by the fetus during kicks kept increasing, even until 35 weeks. Increasing pressure on the leg bones and joints probably help the fetus grow, the researchers write.
Other work has found that the mechanical effects of movement can stimulate bone growth, which is why weight-bearing exercises, such as brisk walking and step aerobics, are often recommended for people with osteoporosis. In animal studies, stationary chick and mouse fetuses have abnormal bones and joints, suggesting that movement is crucial to proper development.
The results highlight the importance of the right kinds of movements for fetuses’ growth. Babies born prematurely can sometimes have joint disorders. It’s possible that bone growth and joints are affected when babies finish developing in an environment dominated by gravity, instead of the springy, tight confines of a uterus. Even in utero position might have an effect. Head-up breech babies, for instance, have a higher risk of a certain hip disorder, a link that hints at a relationship between an altered kicking ground and development. In fact, the researchers are now looking at the relationship between fetal movements and skeletal stress and strain in these select groups.
Mechanical forces in utero might have long-lasting repercussions. Abnormal joint shapes are thought to increase the risk of osteoarthritis, says Verbruggen, “which means that how you move in the womb before you’re even born can affect your health much later in life.”
There’s a lot more work to do before scientists fully understand the effects of fetal movements, especially those in less than ideal circumstances. But by putting hard numbers to squirmy wiggles, this new study is kicking things off right.
It’s another record for SpaceX. At 3:50 p.m. Eastern on February 6, the private spaceflight company launched the Falcon Heavy rocket for the first time.
The Heavy — essentially three SpaceX Falcon 9 rocket boosters strapped together — is the most powerful rocket launched since the Saturn V, which shot astronauts to the moon during the Apollo program. SpaceX hopes to use the Heavy to send humans into space. The company is developing another rocket, dubbed the BFR, to eventually send people to Mars. Another first for this launch: the synchronized return of two of the boosters. (The third, from the center core, didn’t descend properly, and instead of landing on a droneship, it hit the ocean at 300 mph.) Part of SpaceX’s program is to reuse rockets, which brings down the cost of space launches. The company has successfully landed the cores of its Falcon 9 rockets 21 times and reflew a rocket six times. The company landed a previously used rocket for the first time in March.
But the cargo for today’s launch is aimed at another planet. The rocket carried SpaceX CEO Elon Musk’s red Tesla Roadster with “Space Oddity” by David Bowie playing on the stereo. It is now heading toward Mars.
“I love the thought of a car drifting apparently endlessly through space and perhaps being discovered by an alien race millions of years in the future,” Musk tweeted in December. Editor’s note: This story was updated on February 7 to update the status of the booster landings, and again on February 9 to correct the rocket that SpaceX hopes to use to send people to Mars. The company intends to use its BFR rocket, not the Falcon Heavy.
Researchers from Google are testing a quantum computer with 72 quantum bits, or qubits, scientists reported March 5 at a meeting of the American Physical Society — a big step up from the company’s previous nine-qubit chip.
The team hopes to use the larger quantum chip to demonstrate quantum supremacy for the first time, performing a calculation that is impossible with traditional computers (SN: 7/8/17, p. 28), Google physicist Julian Kelly reported. Achieving quantum supremacy requires a computer of more than 50 qubits, but scientists are still struggling to control so many finicky quantum entities at once. Unlike standard bits that take on a value of 0 or 1, a qubit can be 0, 1 or a mashup of the two, thanks to a quantum quirk known as superposition.
Nicknamed Bristlecone because its qubits are arranged in a pattern resembling a pinecone’s scales, the computer is now being put through its paces. “We’re just starting testing,” says physicist John Martinis of Google and the University of California, Santa Barbara. “From what we know so far, we’re very optimistic.” The quantum supremacy demonstration could come within a few months if everything works well, Martinis says.
Google is one of several companies working to make quantum computers a reality. IBM announced it was testing a 50-qubit quantum computer in November 2017 (SN Online: 11/10/17), and Intel announced a 49-qubit test chip in January.
And the winner is in. Of the roughly 34,000 submissions sent in by the public, NASA has finally chosen an official nickname for the New Horizons spacecraft’s next destination: Ultima Thule.
New Horizons is scheduled to visit the tiny Kuiper Belt object on New Year’s Day 2019. NASA announced in November that it was seeking public input for a catchier name than the object’s existing moniker: 2014 MU69. Submissions varied wildly, ranging from the mythological Olympus to the much less grandiose Nubbin, defined as a “small lump or residual part” (SN Online: 11/7/17).
The final choice, Ultima Thule (pronounced “thoo-lee”), was announced March 13. It means “beyond the borders of the known world.” The nickname is a nice fit since the object will be the most distant solar system body ever visited.
After the flyby, NASA will submit a formal name to the International Astronomical Union based on whether Ultima Thule is a single object, a binary pair or a multi-object system.
A fungus that recently evolved to infect humans is spreading rapidly in health care facilities in the United States and becoming harder to treat, a study from the U.S. Centers for Disease Control and Prevention finds.
Candida auris infections were first detected in the United States in 2013. Each year since, the number of people infected — though still small — has increased dramatically. In 2016, the fungus sickened 53 people. In 2021, the deadly fungus infected 1,471 people, nearly twice the 756 cases from the year before, researchers report March 21 in Annals of Internal Medicine. What’s more, the team found, the fungus is becoming resistant to antifungal drugs. The rise of cases and antifungal resistance is “concerning,” says microbiologist and immunologist Arturo Casadevall, who studies fungal infections. “You worry because [the study] is telling you what could be a harbinger of things to come.” Casadevall, of Johns Hopkins Bloomberg School of Public Health, was not involved in the CDC study.
In tests of people at high risk of infection, researchers also found 4,041 individuals who carried the fungus in 2021 but were not sick at the time. A small percentage of carriers may later get sick from the fungus, says Meghan Lyman, a medical epidemiologist in the CDC’s Mycotic Diseases Branch in Atlanta, possibly developing bloodstream infections that carry a high risk of death.
Starting in 2012, C. auris infections popped up suddenly in hospitals on three continents, probably evolving to grow at human body temperature as a result of climate change (SN: 7/26/19). The fungus, typically detected through blood or urine tests, usually infects people in health care settings such as hospitals, rehabilitation facilities and long-term care homes. Because people who get infected are often already sick, it can be hard to tell whether symptoms such as fevers are from the existing illness or an infection. Those most at risk of infection include people who are ill; those who have catheters, breathing or feeding tubes or other invasive medical devices; and those who have repeated or long stays in health care facilities. Healthy people are usually not infected but can spread the fungus to others by contact with contaminated surfaces, including gowns and gloves worn by health care workers, Lyman says.
Growing drug resistance Infections can be treated with antifungal drugs. But Lyman and colleagues found that the fungus is becoming resistant to an important class of such medications called echinocandins. These drugs are used as both the first line and the last line of defense against C. auris, says Casadevall.
Before 2020, six people were known to have echinocandin-resistant infections and four other people had infections resistant to all three class of existing antifungal drugs. That resistance developed during treatment using echinocandin. None of those cases passed the resistant strain to others. But in 2021, 19 people were diagnosed with echinocandin-resistant infections and seven with infections resistant to multiple drugs.
More concerning, one outbreak in Washington, D.C., and another in Texas suggested people could transmit the drug-resistant infections to each other. “Patients who had never been on echinocandins were getting these resistant strains,” Lyman says.
Some health care facilities have been able to identify cases early and prevent outbreaks. “We’re obviously very concerned,” Lyman says, “but we are encouraged by these facilities that have had success at containing it.” Using those facilities’ infection control measures may help limit cases of C. auris, she says, as well as reducing spread other fungal, bacterial and viral pathogens.
