In history, Tashkent, the capital of Uzbekistan, was once an important hub along the ancient Silk Road, with notable figures such as China's envoy Zhang Qian, and pilgrims Faxian and Xuanzang leaving their footprints here. Due to its harsh climate and geographical conditions, those who embarked on this route in different eras were often bestowed titles like "explorers," "warriors," and "pioneers." 

Today, the Silk Road still attracts such trailblazers, but the Silk Road Economic Belt under the China-proposed Belt and Road Initiative (BRI) has changed dramatically from its predecessors. One by one, major projects designed and built by China have left a unique and beautiful mark along the Silk Road in the new era.

Recently, Global Times reporters explored the super projects undertaken by Chinese enterprises in Uzbekistan to witness the embodiment of Chinese technology, quality standards, and wisdom, as the grand projects have brought about tremendous changes to the socio-economic landscape of Central Asia.

A modern town part of national 'heritage' 

When looking into the distance from the heights of Tashkent, a mushrooming of modern sports stadiums appears. The Olympic Town of Uzbekistan constructed by the China CAMC Engineering Company, which will be the largest sports complex in the entire Central Asia region upon its completion, is just one of the grand sports-related projects under construction. Two years hence, in 2025, the Olympic town will play host to the 4th Asian Youth Games and the 5th Asian Youth.

"You guys came a little too early. By the middle of September, the structures of the five main stadiums will have been completed," Han Xueli, business project manager at China CAMC Engineering Company, told the Global Times on August 17. 

The Olympic Town project is a large sports complex covering an area of 100 hectares, including 5 main stadiums and 15 outdoor sports fields. It is the first large-scale cooperative project to be jointly undertaken by China and Uzbekistan after the Shanghai Cooperation Organization (SCO) Samarkand summit in 2022. 

Han explained that the design, construction, and quality assurance have all adopted Chinese standards, integrated high-end technology with green elements. For example, the project will install a rooftop photovoltaic system with a total capacity of 7 megawatts. All the roofs of parking lots and sports facilities, such as the ball sports complex, will be covered with solar panels. This will not only facilitate the entry of new energy vehicles but also meet the daily electricity needs of the entire sports complex.

Fully utilizing the existing terrain, the project has two landscape water systems that are both aesthetically pleasing and practical thanks to their rainwater storage capacities. Considering the local climate, the project has embedded pipes capable of drip irrigation, replacing the previous flood irrigation system in Tashkent. Additionally, the Olympic Town incorporates 5G technology to achieve smart venues and intelligent operations.

However, completing such high-quality project within two years is not an easy task. The Uzbekistan-based China CAMC Engineering Company team has contributed a lot toward meeting the deadline. 

In the eyes of many Uzbeks, many of these Chinese concepts and standards have surpassed their expectations. Moreover, under the difficult environment of both extreme heat and cold, it is not easy to complete a project of this scale without compromising on quality in just two years' time and realize its completion by the end of 2024. However, the Chinese contractor has always actively looked for ways to solve problems and work with the Uzbek side to actualize the ambitions completion goal.

"During summer, we usually do the construction work in the morning and early evening, so as to avoid the hottest time at noon; water pipes crack easily in winter, so we strive to complete the upper steel structure lifting before the arrival of winter," said Han. 

In order to realize the real-time follow up of the project, we also introduced China's Building Information Modeling (BIM) technology, Han said proudly. BIM modeling allows users to create and view a virtual model of intelligent 3D objects, which can help with visualization, quantification, and simulation of design, construction, and other tasks related to the building process.

The quality and construction speed of the Olympic City project has also been applauded by Uzbeks. This is Uzbekistan's first world-class Olympic facility and we are creating new standards thanks to Chinese companies. Such projects will boost the economic development of the country, Vadim Akhmadiev, Technical Project manager of the Ministry for Sport and Youth Policy of Uzbekistan, told the Global Times. 

Akhmadiev said the Olympic City project will become a part of Uzbekistan's "heritage." "It is not only important for my generation, but also for the next generation."

Making history on open road

In the bazaars of Tashkent, fresh and succulent pomegranates and tomatoes from the Fergana Valley entice consumers. However, locals told the Global Times that such scenes were a rarity a decade ago. Hindered by the Tianshan Mountains, it was not easy for people from Eastern Uzbekistan's Fergana region to access the capital city. They would often resort to detouring through neighboring Tajikistan, which would take as much as an entire day. 

However, this predicament has been completely transformed by a railway tunnel - the Qamchiq Tunnel. This is currently the longest railway tunnel in Central Asia, spanning 19.2 kilometers, which is also a crucial project that connects the Angren-Pap railway line, a key transportation route between the eastern and western parts of Uzbekistan. 

The Qamchiq Tunnel project undertaken by the China Railway Tunnel Group (CRTG) began construction in 2013. The main tunnel was completed in February 2016, and was officially opened to traffic in June of the same year. In other words, it took only 900 days for Chinese contractors to complete what's considered to be a wonder - constructing a train tunnel through which trains can traverse the mountains in just 900 seconds.

"The construction of the tunnel was very difficult," Zhou Xiaoguang, project manager of the Qamchiq Tunnel project from CRTG, told the Global Times. 

The tunnel passes through the mountain at an altitude of 1,200 meters, with a maximum depth of the buried main line of 1,300 meters, which has to pass through seven geological fault zones and nearly 10 kilometers of rock burst zones.

Such a long tunnel not only needs to excavated, but needs the addition of safety access points including inclined shafts and contact access, further complicating the engineering process.

In the eyes of Deng Wei, a technician who once participated in the construction of the Kamchik Tunnel, frequent rock falls were the biggest problem encountered during the tunnel's construction that year.

"There were more than 3,000 rock falls of moderate intensity and above, and the most serious one caused the tunnel to collapse for a length of 2,000 cubic meters, posing a great threat to the safety and even the psychology of construction workers," Deng told the Global Times.

In order to overcome the perplexing problem of rock falls, the CRTG contractors organized several multinational expert meetings and conducted joint scientific research with Chinese domestic universities to develop sound scientific methods. 

Thanks to the timely research and proper technological applications, no injuries were suffered from rock fall in the nearly 10-kilometer long rock explosion zone, Deng recalled proudly.

The harsh environment was another major difficulty encountered in the construction. Zhou still remembers that in January 2014, a rare heavy snow storm which lasted for two weeks caused an avalanche on the mountain near the tunnel, which was 7-8 meters thick and more than 40 meters long, effectively enclosing the construction team within the construction site, and cut access to outside production and amenities transportation channel. "Later, workers used large machines for three days to reopen the lifeline," Zhou lamented.

"It is because of the 'Chinese spirit' of overcoming adversity that we were able to complete this super project in 900 days, which was once estimated to take as long as 25 years to complete by experts during the Soviet Union period," he said.

Further enhanced mutual trust

The successful launch and development of China's mega projects overseas reflects the further enhanced of political mutual trust between China and Central Asia in recent years. 

Han told Global Times that whenever there are problems in the construction of the Olympic Town, various departments such as the Uzbekistan Ministry of Sports, Customs Committee, and city government of Tashkent always appear to help China coordinate efforts to solve the problems.

"For example, Uzbekistan's President Shavkat Mirziyoyev even personally signed a presidential decree to open a 'green channel' for us to import a large amount of construction materials and equipment, ensuring that the imported supplies for the project could clear customs with zero tariffs and were delivered to the site quickly," Han said. "The high level of trust and support from the Uzbek side toward China is an important reason why mega projects like the Olympic Town are able to progress so rapidly."

Additionally, the acceleration of the internationalization process of the Chinese Yuan has also become an important driving force for more Chinese mega projects to go global. Taking the Uzbekistan's Olympic Town as an example, the project adopted the RMB loan model, with the Export-Import Bank of China providing RMB loans. This is also the first international engineering project in Uzbekistan to be financed by a sovereign commercial loan denominated in RMB. Observers noted that compared with financing through European and American capital markets, RMB loans have lower costs and are more economically beneficial to the financing country.

At the same time, China's mega projects are also reshaping the geopolitical landscape of Central Asia. Taking the Qamchiq Tunnel as an example, the completion of this railway tunnel has not only eliminated the need for long detours through other countries, but also has the potential to become a new transportation hub and important international transit channel along the China-Central Asia-Europe transportation corridor. 

"In the last two years, the construction of the future operation of the China-Kyrgyzstan-Uzbekistan railway project has been made a priority. If this railway can be successfully built, trains departing from China in the future will enter Uzbekistan through Kyrgyzstan, pass through the Qamchiq Tunnel to Tashkent, and then continue through Turkmenistan and the Middle East to Europe. This route will be the shortest and fastest route for the Eurasian continent," said Zhou.

The BRI is transforming Uzbekistan from a landlocked country into an important transportation hub in the region, and promoting the integration of Uzbekistan and other Central Asian countries into the global economy and the world's logistics system, said Saidmukhtar Saidkasimov, former deputy prime minister and former foreign minister of Uzbekistan, in an exclusive interview with the Global Times.

In Han's view, all the hard work today is worth it, because he expects that after the completion of the project, the people of Uzbekistan will usher in their own country's era of high-standard and modern venues, and become another bright "Made in China" calling card in Central Asia.

In the face of an escalating climate change threat, the Belt and Road Initiative (BRI) actively champions the spirit of green and low-carbon development, advocating for a sustainable future. 

As the recent BRI white paper released by China's State Council points out, the BRI embraces the global trend of green and low-carbon development, emphasizes respect for and protection of nature, and respects the right of all parties to pursue sustainable and eco-friendly growth.

Despite vicious campaigns launched by certain Western media outlets to smear the BRI as causing environmental damage in other countries, analysts noted that the real fact is that by making use of the expertise in renewable energy, energy conservation, environmental protection, and clean energy production, and employing Chinese technology, products, and experience, China actively promotes BRI cooperation in green development.

During visits by Global Times reporters to various BRI project sites worldwide, it became evident that Chinese enterprises prioritize environmental conservation measures when conducting operations abroad. Meanwhile, there is an increasing uptake of Chinese energy products in Belt and Road countries transported by rail and air, effectively harnessing renewable resources like wind and solar energy.

Taking the cooperation between China and Fiji as an example, in 2014, China and Fiji established the South-South cooperation to address climate change. In May 2022, the two countries signed a bilateral MOU on the Provision of Goods under the South-South Cooperation for Addressing Climate Change. 

Chinese Ambassador to Fiji Zhou Jian told the Global Times that China and Fiji are both victims of climate change, as well as allies in addressing climate change. 

Analysts pointed out that the cooperation between China and Fiji is a shining example of the green BRI. The Belt and Road Initiative Action Plan not only laid out the overarching vision and framework of the BRI but also underscored the paramount significance of environmental preservation and sustainability within BRI projects.

Furthermore, China, in conjunction with BRI participant nations, has established comprehensive frameworks for the implementation of Environmental Impact Assessment (EIA) Guidelines for BRI projects. These guidelines have proven instrumental in ensuring that environmental considerations are integrated into the planning and execution of projects.

China has also extended its commitment to environmentally sustainable BRI initiatives through various international agreements and partnerships. This includes the signing of an MOU with the United Nations Environment Programme, aimed at fostering a green Belt and Road from 2017 to 2022. Additionally, China has entered into environmental cooperation accords with over 30 countries and international organizations. Furthermore, in collaboration with various nations, China launched the Initiative for Belt and Road Partnership on Green Development. It has also played a pivotal role in establishing the BRI International Green Development Coalition, boasting more than 150 partners from over 40 countries, the Xinhua News Agency reported.

Influenced by the US' strategic competition against China, some Western countries have clearly become hostile toward China in recent years. South Korea and Australia, as two typical "middle powers" of similar economic scale which have close trade ties with China, are both US allies in the Asia-Pacific region, and their relations with China have deteriorated for some time. However, the recent "ice-breaking" of China-Australia relations and the continuous "freezing" of China-South Korea relations are in stark contrast.

Recently, China and Australia have witnessed warming ties. Amid the East Asia Summit, Australian Prime Minister Anthony Albanese confirmed on September 7 that he will visit China later this year after talks with Chinese Premier Li Qiang, with both sides agreeing to resume exchanges in various fields. As leader of the Labor Party, Albanese has shown a different stance toward China from his predecessors since he came to power last year. On the same day, the 7th China-Australia High-Level Dialogue was held in Beijing, the first in three years. It is noticed that the Australian delegation covers all sectors of politics, business, academia and the media, with many former politicians from both the Liberal and Labor parties in attendance. This is seen as a consensus between the two parties of Australia to improve relations with China.

Australia's shift has been very positive. However, the same cannot be said about South Korea's performance. Since coming to power in May last year, the Yoon Suk-yeol administration has focused on the South Korea-US alliance, highlighting the "values" orientation of its foreign policy and displaying a distinctive "pro-US" tendency. With regards to its relations with China, the Yoon administration blatantly interferes in the Taiwan question and attempts to follow the US and Japan in terms of the South China Sea issue. These moves have further led to tension and a standstill between Beijing and Seoul.

The Yoon administration, perhaps realizing that its policy toward China is too paranoid, has recently tried to send positive messages to China. In the meeting with Premier Li, Yoon emphasized that the South Korean side is willing to work with China to practice multilateralism and free trade and promote the stable and healthy development of the South Korea-China relationship. However, so far, these signals released by South Korea have not yet been put into practice.

Looking back at the China-South Korea and China-Australia relations over the years, the turning point occurred after the change of government in South Korea and Australia last year. After the Australian Labor administration came to power, it made adjustments to the anti-China "microphone diplomacy" of its predecessor under Scott Morrison and sent out frequent signals to repair relations with China. Therefore, the leaders of the two countries met during the G20 summit in Bali, Indonesia in November last year, which promoted the improvement in bilateral relations.

In contrast, the Yoon administration, which also came to power last year, took the opposite approach, changing the previously balanced route between the US and China to the "pro-US" orientation, which caused the deterioration of its ties with China.

The impact of such two different policy orientations is prominent. From January to July this year, China-South Korea bilateral trade fell 16.6 percent year-on-year. Some analysts said that the negative effects of South Korea's policy of following the US and "decoupling" from China are becoming apparent. Meanwhile, bilateral trade between China and Australia saw an increase of 5.4 percent year-on-year, which is particularly striking against the backdrop of a general slowdown in the global economy. Clearly the improvement of political relations between China and Australia has played a crucial role in boosting bilateral economic and trade ties.

For Seoul and Canberra, there are many similarities in their relationship with Beijing. Both South Korea and Australia have no historical or territorial disputes with China, but have maintained close economic and trade ties. Furthermore, China does not pose any threat to either country. In particular, the Australian and South Korean economies are heavily dependent on trade with China, so stabilizing and developing relations with China is essentially in the national interests of both countries. The latest improvement in China-Australia relations is exactly due to Canberra's return to rather independent and pragmatic policy toward China, which should be an inspiration for the Yoon administration.

As Chinese Foreign Minister Wang Yi put forward during his meeting with the Australian delegation, it is necessary for the two sides to draw useful experience and lessons in the bilateral relations. He urged the two sides to look at each other objectively, calmly and kindly, understand that China and Australia should remain partners rather than rivals, and advance bilateral relations independently and without any influence or interference from any third party. These three points are also helpful suggestions for South Korea.

The author is a research fellow at the China Institute of International Studies.

Out of options. Illustration: Liu Rui/GT

China successfully carried out a trial test on the main engine of the Long March-10, a new carrier rocket designed for manned moon landing missions, on Saturday, as the country actively makes progress on the road to realizing its goal of landing taikonauts on the moon by the year 2030.

The test assessed all the requirements for the engine, and provided strong support for the solidification for its technical state, the establishment of the technical baseline of the product and improving reliability, the Global Times learned from the China Aerospace Science and Technology Corporation (CASC) 6th Academy on Sunday.

The engine used in the test employs advanced liquid oxygen as fuel and can reach a thrust of 130 tons. It is an updated version of China's strongest active rocket engine, which has a thrust of 120 tons and is used in rockets including the Long March-5.

Although the thrust of the engine has only improved by 10 tons, the first stage of the Long March-10 will reportedly carry 21 engines. This will add another 210 tons of the thrust in total, Wang Yanan, chief editor of Beijing-based Aerospace Knowledge magazine, told the Global Times on Sunday.

Zhou Xianqi, a researcher from the CASC, told the Global Times that "the engine has met all the requirements in the Saturday test." He noted that the engine's startup, shutdown and running stability under high and low conditions have been tested, and all relevant parameters have been obtained.

During the development of the engine, many new materials, new processes and new technologies were applied. Researchers have overcome a number of key technical problems such as the sequence of the engine's start-up and shutdown, continuously changing the engine's thrust at scale, in addition to the engine's long life and improved reliability, laying a solid foundation for the engine's future development, the Global Times learned.

"In the second half of this year, we will conduct several high-altitude simulation tests to determine the relevant performance and parameters of this engine," Zhou added.

The new carrier rocket has mainly been developed for the purpose of sending spacecraft and moon landers into the Earth-moon transfer orbit, Rong Yi, a rocket expert with the CASC China Academy of Launch Vehicle Technology, was quoted as saying by the Xinhua News Agency on Saturday.

The rocket uses liquid hydrogen, liquid oxygen and kerosene as propellants. It has a total length of about 92 meters, a takeoff weight of about 2,187 tons, a takeoff thrust of about 2,678 tons, and a carrying capacity of no less than 27 tons for the Earth-moon transfer orbit, according to Xinhua.

A non-booster configuration of the new rocket is capable of conducting missions for transporting taikonauts and cargo to the space station. Its total length is about 67 meters, the takeoff weight is about 740 tons, the takeoff thrust is about 892 tons, and the low-Earth orbit carrying capacity is no less than 14 tons.

The Long March-10 serves as strategic pillar for China's aim to land taikonauts on the moon before 2030. Preparations for the maiden flight are expected to start in 2027, Rong told Xinhua.

Experts are confident that China will be able to accomplish a manned moon landing before 2030 if the Long March-10 can carry out its maiden flight in 2027, as many parts of the carrier rocket such as the engine, core module and other technical structures are upgrades from those in the Long March-5 series of carrier rockets and so have already been fully tested, according to Wang.

China revealed on July 12 that its primary plan is to carry out a manned moon landing before 2030. To achieve this goal, the country will attempt to use two launch vehicles to send a moon surface lander and manned spacecraft into lunar orbit, which will then rendezvous and dock with each other. Following this maneuver, taikonauts onboard the manned spacecraft will enter the lander.

Apart from the progress with the high-thrust engine and the Long March-10 carrier rocket, China is also actively developing spacecraft and lunar landers for the manned moon landing.

China's new-generation of manned spacecraft successfully entered orbit by Long March-5B carrier rocket and returned to Earth during tests in May 2020. Based on the new spacecraft, China is also advancing development of near-Earth spacecraft designed to accommodate four to seven crew members, building a future for space tourism.

China's lunar lander weighs about 26 tons and consists of a lunar landing module and propelling module. It can bring taikonauts down from lunar orbit to land on the moon and send them back to lunar orbit. The lunar lander is also able to conduct autonomous flight. The lunar lander will also carry scientific payloads for exploration focusing on lunar geology and lunar physics, observation, space life sciences, as well as deep drilling on the lunar surface and utilization of lunar resources, according to Xinhua.

In addition to the lunar rover, China also plans to develop a lunar mobile laboratory with large-scale mobile capability, which can realize long-term unmanned autonomous activities on the lunar surface and support taikonauts for short time stays, Xinhua said.

In a study of pregnant women in Brazil, nearly 30 percent of those infected with Zika virus had babies with fetal abnormalities, researchers report March 4 in the New England Journal of Medicine.

Zika virus is the leading suspect for what’s causing a spike in certain birth defects reported in Brazil. Scientists have previously found traces of Zika in the brains of fetuses with microcephaly (a birth defect that leaves babies with smaller-than-normal heads). And one study has reported that the virus can infect and kill a cell type crucial to developing brains (SN Online: 3/4/16).

The new study enrolled 88 pregnant women from Rio de Janeiro who had developed a rash (a sign of Zika infection). They tracked the women throughout their pregnancies; so far, eight have given birth. Of the 42 women who both tested positive for Zika and received fetal ultrasounds, 12 of the women’s babies had abnormalities (including small heads, damaged brain tissue, and low levels of amniotic fluid).

Despite mild clinical symptoms, Zika infection during pregnancy appears to be linked with grave outcomes, the authors write.

A new, extremely black material can turn water into steam using only sunlight, without the need to bring the water to a boil. Made of gold nanoparticles tens of billionths of a meter wide affixed to a scaffold pocked with tiny channels, or “nanopores,” the material is a deep black color because it reflects very little visible light. It is 99 percent efficient at absorbing light in the visible spectrum and parts of the infrared spectrum, researchers report April 8 in Science Advances.

Thanks to its highly porous structure, the material floats on the surface of water, allowing it to soak up the sun’s rays. When light of a certain wavelength hits a gold nanoparticle inside one of the nanopores, it stirs up the electrons on the surface, sloshing them back in forth in an oscillation known as a plasmon. These plasmons produce localized, intense heating, which vaporizes the water nearby.
The wavelength of light that excites a plasmon depends on the size of the nanoparticle. So in order to take advantage of as much of the sun’s output as possible, the group interspersed a variety of sizes of gold nanoparticles in the pores, which could therefore absorb a range of wavelengths.
It’s not the first time scientists have produced steam with plasmonic materials, but the new material improves the efficiency of the process, converting up to 90 percent of the light’s energy into steam, says materials scientist Jia Zhu of Nanjing University in China, a leader of the research group.

“They have really come out with a very intriguing solution,” says mechanical engineer Nicholas Fang of MIT, who was not involved in the research. The efficiency isn’t quite as high as scientists have achieved with certain other types of materials, like carbon nanotubes, Fang says. But the new material should be cheaper to manufacture.

Efficient steam generation could be useful for desalination, producing freshwater from salty water, says Zhu. Other potential applications range from sterilization to running steam engines. “Steam can be used for many other things,” he says. “It is a very useful form of energy.”

In a galaxy far, far away, Chewbacca is a 7.5-foot-tall Wookiee. On Earth, he’s a small furry beetle.

Researchers discovered four new species of weevils on an island off the coast of Papua New Guinea, one of which they named after the lofty Star Wars character. Trigonopterus chewbacca is a black, flightless beetle about 3 millimeters long that thrives in the tropical forests of New Britain. Although T. chewbacca doesn’t resemble its namesake in size, the dense hairlike scales covering its head and legs reminded the researchers of Chewbacca’s fur.

Before these finds, Trigonopterus beetles hadn’t been spotted on New Britain. The discovery of T. chewbacca and its three relatives, T. obsidianus, T. puncticollis and T. silaliensis, suggests that the genus colonized the island at least four separate times, the team reports April 21 in ZooKeys.

T. chewbacca joins the ranks of other insects with a Star Wars moniker. Among its peers: a furry moth also named after the heroic Wookiee, a wasp named for Yoda and a Darth Vader slime-mold beetle.

Vultures are the birds everyone loves to hate. Even though you have nothing to fear from them — unless you’re dead — vultures’ steady diet of carrion will gross most people out. That diet may also be responsible for the birds’ quick and steep declines around the globe, a new study shows.

It’s not the dead bodies that are killing vultures, though. It’s the poisons with which humans have laced those meals, both intentionally and inadvertently, Evan Buechley and Çağan Şekercioğlu of the University of Utah in Salt Lake City conclude in the June Biological Conservation.

The team went searching for an explanation to something Şekercioğlu had reported in 2004 and is still true today — that vultures are the most threatened group of birds. Of the 22 species of vultures, nine are now critically endangered, three are endangered and four are near threatened, according to the International Union for Conservation of Nature, which tallies endangered species.

Buechley and Şekercioğlu were looking for an explanation of why these scavenging species (called “obligate scavengers” because they depend almost entirely on carrion for survival) are doing so poorly but “facultative scavengers” — birds such as storks, gulls and crows that can also eat things other than carrion and trash — tend to be doing well and even increasing in numbers in many cases. The researchers collected ecological information and population trend data on the 22 species of vultures and other avian scavengers and then tried to figure out what made the vultures so vulnerable.

Some aspects of biology do contribute to the vulture declines, the team found. These are large animals that live long and don’t produce a lot of offspring. That means that populations can take a long time to recover from bird deaths. But the ultimate cause of those deaths is what is disturbing — dietary toxins, which are the primary cause of declines in 14 of the 16 threatened and near-threatened vulture species, the team found.

Those toxins come in various forms. In India and Southeast Asia, it’s the cattle drug diclofenac, which causes kidney failure in any vulture unlucky enough to come across a cow that didn’t survive its medical treatment. Diclofenac is a problem for vultures in Africa, too, (and now Spain), but there the birds have also fallen victim to the poisons used to kill hyenas, jackals and lions in response to dead livestock. Wildlife poachers have also deliberately poisoned their prey in an effort to get rid of the circling vultures that can alert authorities to their crime. (Buechley and Şekercioğlu discovered a 2007 incident in Namibia in which a poisoned elephant carcass killed as many as 600 birds.) And in Europe and the Americas, carcasses laced with rodenticides, insecticides and lead from ammunition are also killing vulture species.

Without vultures, some of these ecosystems are already having problems. Other scavenging species aren’t quite able to fit into the vulture niche. They can’t eat as much and they don’t have stomachs equipped to kill deadly microbes, like vultures do. That means anything that does eat carrion could potentially spread disease. Populations of scavenging pests, like rats and feral dogs, have already skyrocketed in some places as these animals feast on what vultures would have once dealt with. Perhaps not surprisingly, that has led to problems, such as an increase in dog bites in India that has resulted in thousands of human deaths from rabies.

Much of the vulture declines could be easily solved by banning the chemicals that kill them, the researchers note. Because while vultures may be more inherently vulnerable to extinction than other bird species, due to their biology, their importance to the global ecosystem — and our own health — makes them too valuable to let slip away.

DNA from an ancient woman who lived in what’s now Romania indicates that people in Asia trekked to Africa starting between 45,000 and 40,000 years ago.

Evidence for this back-to-Africa trip comes from the partial remains of a 35,000-year-old Homo sapiens discovered in a Romanian cave more than 60 years ago. A distinctive pattern of alterations to mitochondrial DNA extracted from two of the teeth are similar to alterations seen in mitochondrial DNA of present-day North Africans, signaling an evolutionary connection, the team proposes May 19 in Scientific Reports.

After evolving in Africa around 200,000 years ago, human populations spread out of the continent by 50,000 years ago. The ancient Romanian woman’s DNA came from a maternal line that originated in West Asia after humans initially left Africa but then ended up in North Africa, the scientists propose.