05/06/2019

Do you believe in UFOs? China hints at test of new missile

BEIJING (Reuters) – With a cryptic message about UFOs and a picture of a missile launcher, China’s military has hinted that it has carried out a test of a new missile, after images of an object streaking towards the sky circulated on Chinese social media.

The People’s Liberation Army typically does not announce new missile tests, but occasionally drops hints about what it is up to, amid a massive modernisation push championed by President Xi Jinping to ramp up combat capabilities.
On Sunday, footage circulated on China’s Weibo microblogging service of an object travelling up into the sky, leaving a white trail behind it, over the Bohai Sea, partly closed at the time for military drills.
That caused some Chinese internet users to wonder if it was a UFO, though most thought it was probably the test of a new underwater launched ballistic missile.
In a short post on its official Weibo account late on Monday, the People’s Liberation Army Rocket Force showed a picture of what looked like a road mobile intercontinental ballistic missile launcher against a night sky.
“Do you believe in this world there are UFOs?” it wrote in the caption, without offering further explanation.
The navy then chimed in on its Weibo account with a picture of a missile being launched from underwater heading off into the blue sky above, with a similar caption: “Do you believe in UFOs?”
Defence publication Janes said on its website that the weekend pictures could have been China’s next generation submarine-launched ballistic missile, the JL-3.
The Ministry of Defence did not respond to a request for comment.
The development of the nuclear-armed JL-3 is being closely watched by the United States and its allies as it is expected to have a longer range than its predecessor and will significantly strengthen China’s nuclear deterrent.
In its latest annual survey of China’s military modernisation, the Pentagon said last month the new missile would likely to be fitted on China’s next generation nuclear missile submarines. Construction is due to start in the early 2020s.
Source: Reuters
04/06/2019

No time to waste in saving the world’s rivers from drying up – especially in China

  • Brahma Chellaney writes that excessive damming and drastic overuse of water resources are causing the world’s major waterways to run dry
Vessels head for the lock of the Three Gorges Dam in Yichang, in central China's Hubei province. Sediment build-up in the dam’s reservoir stems from silt flow disruption in the Yangtze River, Brahma Chellaney writes. Photo: Xinhua
Vessels head for the lock of the Three Gorges Dam in Yichang, in central China’s Hubei province. Sediment build-up in the dam’s reservoir stems from silt flow disruption in the Yangtze River, Brahma Chellaney writes. Photo: Xinhua
Thanks to excessive damming and drastic overuse of water resources, an increasing number of major rivers across the world are drying up before reaching the sea.
Nowhere is this more evident than in China, where the old saying, “Follow the river and it will eventually lead you to a sea,” is no longer wholly true.
While a number of smaller rivers in China have simply disappeared, the Yellow River – the cradle of the Chinese civilisation – now tends to run dry before reaching the sea.
This has prompted Chinese scientists to embark on a controversial rainmaking project to help increase the Yellow’s flow. By sucking moisture from the air, however, the project could potentially affect monsoon rains elsewhere.
For large sections of the world’s population, major river systems serve as lifelines. The rivers not only supply the most essential of all natural resources – water – but also sustain biodiversity, which in turn supports human beings.
Yet an increasing number of rivers, not just in China, are drying up before reaching the sea.
A major new United Nations study published early this month offers grim conclusions: human actions are irremediably altering rivers and other ecosystems and driving increasing numbers of plant and animal species to extinction.

“Nature across the globe has now been significantly altered,” according to the study’s summary of findings.

The Yangtze and Jialing rivers come together in the southwestern city of Chongqing. Photo: Simon Song
The Yangtze and Jialing rivers come together in the southwestern city of Chongqing. Photo: Simon Song

Water sustains life and livelihoods and enables economic development.

If the world is to avert a thirsty future and contain the risks of greater intrastate and interstate water conflict, it must protect freshwater ecosystems, which harbour the greatest concentration of species.

The Mekong is mighty no more: book charts river’s demise

Yet, according to another study published in Nature this month humans have modified the flows of most long rivers, other than those found in the remote regions of the

Amazon and Congo basins and the Arctic.

Consequently, only a little more than one-third of the world’s 246 long rivers are still free-flowing, meaning they remain free from dams, levees and other man-made water-diversion structures that leave them increasingly fragmented.

Humans have modified the flows of most long rivers, including the Yangtze, home to some of China’s most spectacular natural scenery. Photo: WWF
Humans have modified the flows of most long rivers, including the Yangtze, home to some of China’s most spectacular natural scenery. Photo: WWF

Such fragmentation is affecting river hydrology, flow of nutrient-rich sediment from the mountains where rivers originate, riparian vegetation, migration of fish and quality of water.

Take the Colorado River, one of the world’s most diverted and dammed rivers. Broken up by more than 100 dams and thousands of kilometres of diversion canals, the Colorado has not reached the sea since 1998.

Sinking sands along the Mekong River leave Vietnamese homeless

The river, which originates in the Rocky Mountains and is the lifeblood for the southwestern United States, used to empty into the Sea of Cortez in Mexico.

But now, owing to the upstream diversion of 9.3 billion cubic metres (328.4 billion cubic feet) of water annually, the Colorado’s flow into its delta has been reduced to a trickle.

Altering the flow characteristics of rivers poses a serious problem for sustainable development, because they affect the ecosystem services on which both humans and wildlife depend. Photo: AP
Altering the flow characteristics of rivers poses a serious problem for sustainable development, because they affect the ecosystem services on which both humans and wildlife depend. Photo: AP

Other major rivers that run dry before reaching the sea include the Amu Darya and the Syr Darya, the two lifelines of Central Asia; the Euphrates and the Tigris in the Middle East; and the Rio Grande, which marks the border between Texas and Mexico before heading to the Gulf of Mexico.

The overused Murray in Australia and Indus in Pakistan are at risk of meeting the same fate.

Are China’s Mekong dams washing away Cambodian livelihoods?

More fundamentally, altered flow characteristics of rivers are among the most serious problems for sustainable development, because they seriously affect the ecosystem services on which both humans and wildlife depend.

Free-flowing rivers, while supporting a wealth of biodiversity, allow billions of fish – the main source of protein for the poor – to trek through their waters and breed copiously.

Urgent action is needed to save the world’s rivers, including improving agricultural practices, which account for the bulk of freshwater withdrawals

Free-flowing rivers also deliver nutrient-rich silt crucial to agriculture, fisheries and marine life.

Such high-quality sediment helps to naturally re-fertilise overworked soils in the plains, sustain freshwater species and, after rivers empty into seas or oceans, underpin the aquatic food chain supporting marine life.

China’s hyperactive dam building illustrates the high costs of river fragmentation. No country in history has built more dams than China. In fact, China today boasts more large dams than the rest of the world combined.

China’s chain of dams and reservoirs on each of its long rivers impedes the downstream flow of sediment, thereby denying essential nutrients to agricultural land and aquatic species.

A case in point is China’s Three Gorges Dam – the world’s largest – which has a problematic build-up of sediment in its own massive reservoir because it has disrupted silt flows in the Yangtze River.

Likewise, China’s cascade of eight giant dams on the Mekong, just before the river enters Southeast Asia, is affecting the quality and quantity of flows in the delta, in Vietnam.

Yangtze dams may spell end to sturgeon in a decade
Undeterred, China is building or planning another 20 dams on the Mekong.
How the drying up of rivers affects seas and oceans is apparent from the Aral Sea, which has shrunk 74 per cent in area and 90 per cent in volume, with its salinity growing nine-fold.
People beat the heat by cooling off in the Yangtze River in Wuhan, in central China’s Hubei province. Photo: Nora Tam
People beat the heat by cooling off in the Yangtze River in Wuhan, in central China’s Hubei province. Photo: Nora Tam

This change is the result of the Aral Sea’s principal water sources, the Amu Darya and Syr Darya, being so overexploited for irrigation that they are drying up before reaching what was once the world’s fourth-largest inland lake.

Compounding the challenges is the increasing pollution of rivers. Aquatic ecosystems have lost half of their biodiversity since the mid-1970s alone.

Chinese court jails nine for dumping toxic waste in Yangtze

Urgent action is needed to save the world’s rivers. This includes action on several fronts, including improving practices in agriculture, which accounts for the bulk of the world’s freshwater withdrawals.

Without embracing integrated water resource management and other sustainable practices, the world risks a parched future.

Source: SCMP

04/06/2019

Will China’s 600km/h maglev train bring air travellers down to earth?

  • Unveiled in Shandong, prototype will be a first step towards ground-breaking high-speed travel that will rival passenger jets, project engineer says
One possible future for rapid transport in China is unveiled in the form of a magnetic levitation train at Qingdao in Shandong province. Photo: Weibo
One possible future for rapid transport in China is unveiled in the form of a magnetic levitation train at Qingdao in Shandong province. Photo: Weibo
An experimental magnetic levitation train capable of travelling at 600km/h went on show at Qingdao in eastern Shandong province on Thursday, state media said.
Powerful electromagnets hold the Qingdao prototype at a thumb’s width from the rail, giving a quiet, smooth ride at speeds close to those involved in air travel, developers said.
While China operates the world’s fastest conventional train service, which can reach a speed of 350km/h, the Shanghai Maglev has been in commercial operation since the end of 2002 and can reach a top speed of 430km/h. It operates on one 30-kilometre (19-mile) line between two stations.
Ding Sansan, deputy chief engineer with developer the CRRC Sifang Corporation, said China achieved breakthroughs in maglev technology during the “three-year-battle” to build the new train that involved cooperation between more than 30 enterprises, universities and government research institutes.
The construction of a train body with ultra-lightweight, high-strength materials was a challenge, Ding said. Complex physical problems created by high speeds also needed to be solved in new ways if the Qingdao prototype was to reach peak performance.

China was a leader in technologies that included suspension, guidance, control and high-powered traction, Ding told Qingdao Daily.

“The test vehicle has been powered up and is in good order,” Ding was quoted by the newspaper as saying.

Chinese maglev train capable of travelling at 600km/h on track for 2020 test run as design completed
The prototype promised to eliminate the advantages jet passenger planes had over ground vehicles over a distance of 1,500km, he said.

Taking Beijing-to-Shanghai by plane as an example, Ding suggested: “It takes about four-and-a-half hours by plane including preparation time for the journey; about five-and-a-half hours by high-speed rail, and [would] only [take] about three-and-a-half hours by maglev.”

While earlier reports suggested the prototype was expected to begin full-scale testing by 2020, it was unclear what Thursday’s unveiling meant for this timetable.

China’s latest prototype high-speed maglev train factors the comfort of paying customers into its test operations. Photo: Weibo
China’s latest prototype high-speed maglev train factors the comfort of paying customers into its test operations. Photo: Weibo

More maglevs would join the development project in the coming months, the team leader was quoted as saying, while mass production of the technology was likely by 2021.

In contrast to the optimism of the team at Qingdao, Chen Peihong, professor of economics at Beijing Jiaotong University and a transport analyst, was more circumspect about the future of maglev trains.

“The market has to be bigger. Technology alone cannot make [the concept] a success,” she said.

Plane or train: as high-speed rail link connects Hong Kong to 44 mainland Chinese cities, what are cheapest and fastest ways to get where you are going?

Public transport relied heavily on economies of scale, Chen said. Chinese cities including Jinan, Hangzhou and Chongqing were considering maglev lines, but even the longest – from Jinan to Taian – would not exceed 50 kilometres.

Chen said that electromagnetic fields from maglevs were greater than those from the lines that powered high-speed trains, while environmental worries might keep maglevs out of densely-populated areas.

There was a debate in China in the early 2000s about the benefits of a developing a maglev compared to high-speed rail, researchers on that project said. Rail was preferred by the government because it was an established technology and one that was cheaper to realise.

By the end of last year, China’s high-speed rail network extended to most of the country at a distance in excess of 29,000 kilometres, according to government figures, twice as long as the rest of the world’s high-speed rail lines combined. Spain’s high-speed AVE network was the second-longest at 3,100km.

Elsewhere, researchers in Chengdu, Sichuan province, said a vehicle inside a vacuum tube powered by a superconductor coil from a maglev train – a hyperlink – was in development. They expected the vehicle to reach speeds in excess of 1,000km/h as air was pumped from the tube and resistance to the speeding object gradually eliminated.

Source: SCMP

04/06/2019

China’s lunar rover Yutu ends 60-year riddle of moon’s mantle with discovery of mineral olivine

  • Yutu’s discovery of olivine helps pave the way for scientists to confirm existence of a mantle beneath the moon’s crust
  • Crystallised mineral likely came from a crater caused by a meteor strike
China’s lunar rover, Yutu, has made a groundbreaking discovery. Photo: Xinhua
China’s lunar rover, Yutu, has made a groundbreaking discovery. Photo: Xinhua
China’s lunar rover, Yutu, has made a groundbreaking discovery that proves what scientists have been thinking for decades: that the moon has a mantle.
Scientists have long suspected that the moon has a mantle under its crust, just like the Earth, but for the past 60 years lunar explorations, including the US Apollo missions, have failed to provide proof. While there were clues, there was no direct evidence.
“Now we have it,” said Professor Li Chunlai, deputy director of the National Astronomical Observatory of China and a lead scientist on the Chang’e-4 mission that put Yutu, or Jade Rabbit as it is known in English, on the moon.
The findings, published in the latest issue of journal Nature on Thursday, answer some fundamental questions about the moon, such as its internal structure and history of its formation.
The rover discovered olivine in surface samples collected near its landing site. Photo: Xinhua
The rover discovered olivine in surface samples collected near its landing site. Photo: Xinhua

During its first mission on January 3, Yutu discovered olivine, a green, crystallised mineral usually found deep underground – like the upper mantle of the Earth – in surface samples collected near its landing site.

Further analysis showed that the olivine was not local, but had originated from a 72km diameter (45-mile) crater nearby.

The far side of the moon has more craters than the near side, which faces the Earth, and a meteor strike probably penetrated to the mantle and brought up materials to the surface.

What you need to know about Chang’e 4’s mission to the moon
Yutu’s landing site used to be littered by rocks, but cosmic rays and solar wind weathered them to dust, Li said.

“What we found is the first direct evidence of materials from deep below the lunar crust,” though how deep is still unknown, he said.

It is generally believed that the moon was once covered by oceans of molten rock. Lighter substances rose to the surface and formed a crust while heavier ones sank to form the mantle and core. The new findings support that theory.

China is the first country to land a rover on the far side on the moon and is planning to send a larger spacecraft there later this year to bring back samples.

The first Chinese astronauts will land on the moon between 2025 to 2030, according to Beijing’s latest schedule.

The Apollo missions brought back many rock samples, some of which contained olivine, but some scientists suspected they might have come from a volcanic eruption.

First photo of lunar rover leaving ‘footprints’ on moon

China, the United States and other nations have all announced plans to launch missions to exploit the moon’s resources within the next decade or two.

Yutu’s discovery could help scientists to draw a more accurate map of those resources, including the volume and distribution of minerals, researchers said.

In Chinese folklore, Yutu or Jade Rabbit as it is known in English, is a companion of the moon goddess Chang’e. Photo: Handout
In Chinese folklore, Yutu or Jade Rabbit as it is known in English, is a companion of the moon goddess Chang’e. Photo: Handout

US President Donald Trump gave Nasa an additional US$1.6 billion budget to put Americans back on the moon by 2024.

Li said Chinese scientists were willing to work with their colleagues in the US, but Washington had blocked any such collaboration.

“Our door remains open,” he said.

Source: SCMP

04/06/2019

Could caped dinosaur found in China glide like Batman?

  • 163-million-year-old fossil represents something new in evolutionary history
  • Researchers say discovery is extraordinary
A small, tree-climbing dinosaur discovered in China has overturned evolutionary history with its cape-like membrane. Photo: Handout
A small, tree-climbing dinosaur discovered in China has overturned evolutionary history with its cape-like membrane. Photo: Handout
Chinese scientists have discovered a new dinosaur species which appears to have been equipped – like Batman – with a cape that may have given it the ability to glide.

Researchers say the finding is extraordinary, representing something new in evolutionary history.

The little tree-climbing dinosaur – about the size of a magpie – was equipped with a soft, smooth membrane draped over its long, strong forearms that may have looked like the wings of a bat when spread.

The 163-million-year-old fossil has been named Ambopteryx longibrachium and was found at Wubaiding village, Liaoning province, northeast China, in 2017, according to a paper published in the journal Nature on Thursday.
The 163-million-year-old fossil found in eastern China showed long, strong forearms draped in a smooth cape-like membrane. Photo: Handout
The 163-million-year-old fossil found in eastern China showed long, strong forearms draped in a smooth cape-like membrane. Photo: Handout

Lead author Dr Wang Min, a researcher with the Chinese Academy of Sciences’ Institute of Vertebrate Palaeontology and Palaeoanthropology in Beijing, said quite a number of dinosaurs had birdlike feathers and some eventually evolved into birds.

“But bat-like wings? The idea has not been widely accepted,” he said.

The possibility was first raised a few years ago when a close relative of the newly discovered dinosaur was found, also in China, with a finger bone which had never before been seen in dinosaurs.

Scientists discover ‘nightmare’ crab with cartoon eyes
A small number of researchers suspected the bone could have been used to hold membrane, but the mainstream scientific community remained sceptical.

Why on earth, some critics argued, would a dinosaur need membrane when it already had feathers?

In the 2008 film “The Dark Knight”, Batman uses his cape to glide among the skyscrapers of Hong Kong. Researchers believe the new dinosaur may have used its cape-like membrane in a similar way. Photo: Handout
In the 2008 film “The Dark Knight”, Batman uses his cape to glide among the skyscrapers of Hong Kong. Researchers believe the new dinosaur may have used its cape-like membrane in a similar way. Photo: Handout

Ambopteryx longibrachium, nonetheless, had the same peculiar finger bone, only this time scientists were also able to observe a large membrane and a thick layer of hair over its head, neck and shoulders.

The hair and membrane was not an efficient combination for flight aerodynamics. But “in evolution, nothing is impossible”, Wang said.

The tiny T. rex cousin that humans could look down on

The dinosaur lived in thick forest and could have been easy prey to large predators. But its wings might have given it the ability to hop from tree to tree, and they could also have been useful when hunting.

The dinosaur had a slim body about the size of a magpie, with a soft, smooth membrane draped over its forearms like a cape. Photo: Handout
The dinosaur had a slim body about the size of a magpie, with a soft, smooth membrane draped over its forearms like a cape. Photo: Handout

Wang and his colleagues found traces of small bones in the remnant of its stomach. While a tree-climbing dinosaur’s main diet should have been fruit, it could sometimes hunt as well, according to the researchers.

An absence of a large chest bone suggested the dinosaur could not fly at will, like a bird or bat. It remains unclear how long the species survived, but it eventually vanished, probably because of competition from better-equipped winged animals with all-feather or all-membrane wings.

Source: SCMP

04/06/2019

World’s largest technical professional society bans Huawei staff from peer review of research

  • IEEE’s ban has ignited a backlash from its Chinese members, resulting in calls to boycott the organisation
Staff at Huawei Technologies have been banned by the Institute of Electrical and Electronics Engineers from taking part in the peer review of research papers, including serving as editors for journals, after the Chinese telecommunications equipment maker was added to a US trade blacklist. Photo: AP
Staff at Huawei Technologies have been banned by the Institute of Electrical and Electronics Engineers from taking part in the peer review of research papers, including serving as editors for journals, after the Chinese telecommunications equipment maker was added to a US trade blacklist. Photo: AP
The US government’s efforts to reduce the influence of Huawei Technologies, the world’s largest telecommunications equipment supplier, has extended beyond business to cover scientific research.
That development emerged as the New York-based Institute of Electrical and Electronics Engineers (IEEE) moved to ban Huawei employees from the peer review of research papers, including serving as editors for its journals, after the Chinese hi-tech champion was added to a US trade blacklist.
The decision by IEEE, the world’s biggest technical professional organisation, was leaked online across Chinese social media on Wednesday, igniting a backlash from some of the country’s leading scientists who described the move as “anti-science” and “violating academic freedom”.

Zhang Haixia, a professor with the Institute of Microelectronics at Peking University, announced on her WeChat account on Wednesday that she was quitting IEEE because the decision to comply with the trade blacklist went “far beyond the basic line of science and technology” and challenged her professional integrity.

US is waging a tech war against this district in Shenzhen
“As a professor, I do not accept this,” Zhang wrote online in a public letter addressed to IEEE president-elect Toshio Fukuda.
Her resignation letter was viewed more than 40,000 times since it was posted online. The most popular comments on its thread included calls for Chinese scientists to boycott IEEE.

In a statement on May 30, the IEEE said it must comply with its legal obligations under the laws of the US and other jurisdictions and that compliance with regulations “protects the IEEE, our volunteers, and our members”.

It said Huawei employees are only barred from the peer reviewing process and that they can continue to participate in individual membership, corporate membership, enjoy voting rights and take part in a variety of other activities, including the submission of technical papers for publication.

Huawei said it had no comment about the peer review ban.

The issue between Huawei and IEEE has come amid a raging tech war between the world’s two biggest economies, which recently escalated when the US government placed Huawei and its affiliates under the US Entity List on May 16. That bars the Chinese group from buying hardware, software and services from American hi-tech suppliers without US approval.

A succession of major American technology companies, from Google and Microsoft to Intel and Qualcomm, have suspended their dealings with Huawei to comply with the US trade ban.

Growing disquiet in China as US steps up war on tech champions

US President Donald Trump has also signed an executive order barring US companies from using telecoms equipment made by companies that pose a threat to national security.

The trade blacklist, which is maintained by the Bureau of Industry and Security under the US Department of Commerce, identifies organisations and individuals believed to be involved, or pose a significant risk of becoming involved, in activities contrary to America’s national security or foreign policy interests.

A non-profit organisation founded in January 1963, IEEE had more than 422,000 members in more than 160 countries as of December 31 last year. More than 50 per cent of its members, who are rooted in electrical and computer sciences, engineering and related disciplines, are from outside the US.

Technology is true target of US attack on China, says diplomat

It also publishes around 200 transactions, journals and magazines, and sponsors more than 1,900 conferences in 103 countries.

There is no official data on how many IEEE members are based in mainland China. Public information online, however, showed that at least 80 Huawei employees are members of the organisation.

China’s biggest chip maker to delist from NYSE as US targets tech

In a statement released on May 16, IEEE said that as a corporation organised in New York, it must comply with its legal obligation under US laws. It said the US government’s export restriction covers not only physical goods and software but also technical information.

In the leaked IEEE email, the organisation warned its members of “severe legal implications” if they continue to use Huawei staff as reviewers or editors for the peer review process of its journals.

“IEEE is registered in the US, but we should suggest experts at all levels of IEEE to move its headquarters to places such as Switzerland,” said Zhou Zhihua, a leading computer science professor at Nanjing University and an IEEE fellow, in a post on microblogging site Sina Weibo. “More importantly, let’s show more support to China-produced English-language journals.”

Source: SCMP

04/06/2019

Chinese scientists find link between acne and common cold

  • Study of children prone to recurring colds identifies abnormally high presence of skin affecting bacteria
  • More research needed but study holds out prospect of future treatments
Scientists in China believe they have identified the reason why some children repeatedly catch the common cold. Photo: Shutterstock
Scientists in China believe they have identified the reason why some children repeatedly catch the common cold. Photo: Shutterstock
A team of Chinese researchers has found that an acne-causing parasitical microorganism could be the reason some children catch colds more frequently than others.
Professor Zhang Chiyu and his colleagues at the Institute Pasteur of Shanghai, part of the Chinese Academy of Sciences, have found that a bacterium known as Propionibacterium is closely related to recurring infections, raising the possibility of future drugs or treatments, according to their paper in the May issue of Nature Communications.
The scientists analysed clinical samples from 4,407 children diagnosed with the common cold during a period of six years, from 2009 to 2015, at Nanxiang Hospital in Shanghai, and found an abnormally high presence of the bacterium.
Propionibacterium is a parasite microorganism usually found on human skin. It can cause acne and other skin problems. Some forms of the bacteria are also used to create the holes in some popular varieties of cheese.
A computer illustration of Propionibacterium, a microorganism known to cause acne and other skin problems, and now implicated in frequent colds in some children. Photo: Alamy
A computer illustration of Propionibacterium, a microorganism known to cause acne and other skin problems, and now implicated in frequent colds in some children. Photo: Alamy

Zhang said the research team had found an abnormally high presence of Propionibacterium phages – a signature virus which uses the bacterium as a host – in the clinical samples, and it was likely the large colonies of the microorganism had thrived in the sick children’s respiratory ducts.

The imbalance between different microorganism groups could lead to more frequent, prolonged inflammation and cause further damage on respiratory tissues, he said.

“Living environment can be something worth checking,” Zhang said, suggesting that parents could reduce unnecessary exposure of their children to Propionibacterium infections by keeping them from kissing faces with pimples.

The common cold kills four million children under the age of five worldwide every year.

Frequent recurrence of the common cold is not uncommon. Causes for the phenomenon remain very much unknown, in part due to the difficulty of obtaining a large number of blood samples from under-aged patients.

China is making better, cheaper drugs – and its reasons may surprise you

Zhang said some uncertainties remained following the study and cautioned that the results were imperfect. For example, the quality of some samples was not ideal, due to a long period of refrigeration, and the interactive mechanism between the bacterium and infection was not entirely clear.

The findings “should not be immediately applied in clinical practice,” Zhang said.

A confirmation study is underway to monitor the conditions of selected child patients over the next two years and, if the results are positive, a testing kit may soon be available to identify children more vulnerable to recurrent colds, he said.

Medical intervention such as therapy or drugs may also be developed to address the issue of bacterium imbalance.

Antibiotic overdose is a severe problem in China and rest of the world, Zhang said. “Hopefully our study will help find a precise target,” he added.

Source: SCMP

04/06/2019

Tiananmen Square: What happened in the protests of 1989?

File photo of protestersImage copyright AFP
Image caption By early June 1989, huge numbers had gathered in Tiananmen Square

Thirty years ago, Beijing’s Tiananmen Square became the focus for large-scale protests, which were crushed by China’s Communist rulers.

The events produced one of the most iconic photos of the 20th Century – a lone protester standing in front of a line of army tanks.

What led up to the events?

In the 1980s, China was going through huge changes.

The ruling Communist Party began to allow some private companies and foreign investment.

Leader Deng Xiaoping hoped to boost the economy and raise living standards.

However, the move brought with it corruption, while at the same time raising hopes for greater political openness.

Protesters in Tiananmen SquareImage copyright GETTY IMAGES
Image caption Protesters in Tiananmen Square, 1989

The Communist Party was divided between those urging more rapid change and hardliners wanting to maintain strict state control.

In the mid-1980s, student-led protests started.

Those taking part included people who had lived abroad and been exposed to new ideas and higher standards of living.

How did the protests grow?

In spring 1989, the protests grew, with demands for greater political freedom.

Protesters were spurred on by the death of a leading politician, Hu Yaobang, who had overseen some of the economic and political changes.

Archive picture of Deng and HuImage copyrigh AFP
Image caption Deng Xiaoping (left) with Hu Yaobang

He had been pushed out of a top position in the party by political opponents two years earlier.

Tens of thousands gathered on the day of Hu’s funeral, in April, calling for greater freedom of speech and less censorship.

In the following weeks, protesters gathered in Tiananmen Square, with numbers estimated to be up to one million at their largest.

The square is one of Beijing’s most famous landmarks.

It is near the tomb of Mao Zedong, the founder of modern China, and the Great Hall of the People, used for Communist Party meetings.

What was the government’s response?

At first, the government took no direct action against the protesters.

Party officials disagreed on how to respond, some backing concessions, others wanting to take a harder line.

The hardliners won the debate, and in the last two weeks of May, martial law was declared in Beijing.

On 3 to 4 June, troops began to move towards Tiananmen Square, opening fire, crushing and arresting protesters to regain control of the area.

Who was Tank Man?

On 5 June, a man faced down a line of tanks heading away from the square.

He was carrying two shopping bags and was filmed walking to block the tanks from moving past.

"Tank Man" in BeijingImage copyright GETTY IMAGES

He was pulled away by two men.

It’s not known what happened to him but he’s become the defining image of the protests.

How many people died in the protests?

No-one knows for sure how many people were killed.

At the end of June 1989, the Chinese government said 200 civilians and several dozen security personnel had died.

Other estimates have ranged from hundreds to many thousands.

In 2017, newly released UK documents revealed that a diplomatic cable from then British Ambassador to China, Sir Alan Donald, had said that 10,000 had died.

Do people in China know what happened?

Discussion of the events that took place in Tiananmen Square is highly sensitive in China.

View of Tiananmen SquareImage copyright GETTY IMAGES
Image caption Tiananmen Square now – full of tourists and surveillance cameras

Posts relating to the massacres are regularly removed from the internet, tightly controlled by the government.

So, for a younger generation who didn’t live through the protests, there is little awareness about what happened.

Source: The BBC

04/06/2019

Delhi metro: Will free public transport make women safer?

Indian commuters travel in the compartment reserved for women on the metro in New Delhi, India, on June 10, 2015Image copyright GETTY IMAGES
Image caption Mr Kejriwal has proposed free travel on buses and the city’s famed Delhi metro rail service

The chief minister of India’s capital Delhi created a minor sensation when he announced that women would no longer have to pay for public transport.

Arvind Kejriwal said that free rides on city buses and the metro would help improve women’s safety in the city.

Delhi reports some of the highest numbers of rape in India. The 2012 gang rape and murder of a student on a bus in the city sparked massive protests.

However not everyone is convinced that Mr Kejriwal’s proposal will help.

Dinesh Mohan, a transport expert with the Indian Institute of Technology in Delhi, told the BBC that making public transport free wouldn’t solve the problem.

“You need to think about the entire journey and not just the metro – you have to take into account how safe or unsafe sidewalks are and what the journey to the metro station is like in the first place. So if the idea is to make it safer for women, that experience has to be continuous. Safety can’t begin and end at the metro station. I don’t see any thought behind this initiative yet.”

The Delhi metro already reserves a coach exclusively for women on every train it runs.

On social media, the proposal caused a great deal of debate as well.

Many people, including economists and columnists, dismissed the idea and some women even said that they would continue to pay to ride the metro.

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However the proposal also had its share of defenders.

Despite Mr Kejriwal’s announcement, women will have to wait a while to see if it is actually implemented.

The proposal still has to be approved by the federal government because it is an equity partner along with the Delhi government in the Delhi Metro Rail Corporation.

But Mr Kejriwal has said that the federal government’s permission is not necessary as the Delhi government will bear the cost.

Delhi transport minister Kailash Gahlot said since this qualifies as a subsidy, they did not require any such permission.

Some have dismissed the entire thing as a pre-election gimmick by Mr Kejriwal – Delhi will hold state assembly elections next year.

The Delhi Metro Rail Corporation has not officially reacted to the news. But the Times of India newspaper quoted a “source” in the department as saying that implementing the proposal, if it came to pass, would be “difficult”.

Architect and urban planner Sonal Shah said on Twitter that a number of factors had to be taken into consideration for women’s safety to be addressed effectively. She said that transport access was “not equal for men and women”, adding that a number of existing issues with public transport had to be addressed first.

Source: The BBC

04/06/2019

Five bodies spotted in search for climbers missing in Indian Himalayas

NEW DELHI (Reuters) – Five bodies were spotted high on a mountain in the Indian Himalayas on Monday during an aerial search for eight climbers feared swept away in an avalanche last week, a government official said.

The climbers – four from Britain, two from the United States, and one each from Australia and India – were reported missing by colleagues on Friday after they failed to return to their base camp near Nanda Devi, India’s second highest mountain.
An air force helicopter spotted the five bodies on a flight over the area where they went missing, Vijay Kumar Jogdande, the top government official in the nearby Pithoragarh district.
“Four bodies can be seen together and a fifth slightly away from the others,” he said.

The search mission was now working on the assumption that all eight climbers had been killed, he said.

“We are trying to retrieve the bodies. We believe the other three will be nearby,” he said.

The climbers was attempting to climb an unnamed, previously unclimbed 6,477 metre (21,250 feet) peak near Nanda Devi when their route was hit by a “sizeable avalanche”, said the company that organised the expedition, Moran Mountain.

Jogdande, said the bodies were above 5,000 metres and the possibility of a second avalanche would make accessing the site difficult. It had not been decided whether a team would go in by air or on foot, he said.

“We’re considering both alternatives. Since the bodies are at high altitude it is inaccessible, it is still unstable terrain that could lead to a secondary avalanche. We’re working out a plan.”

“It has always been a dangerous place to go. Mount Everest is easier to climb,” he said.

A team would take at least a week to reach the area, Sanjay Gunjiyal, a senior police official involved in the mission, told Reuters.

Four climbers in the group had turned back and later raised the alarm about their missing colleagues. They were evacuated from their base camp by helicopter and were “fine and healthy”, said Tripti Bhatt, an official of the Uttarakhand State Disaster Response Force.

DEADLY SEASON

It has been one of the deadliest climbing seasons in the Himalayas for several years. More than 20 people have been killed in the mountains, including 11 on Mount Everest, the world’s highest peak that has been plagued by poor weather, inexperienced climbers and overcrowding.

Nanda Devi, at 7,816 metres (25,643 feet), and its sister mountain, Nanda Devi East, are among the world’s most challenging peaks and only a handful of people have climbed them.

The leader of the missing group, Martin Moran, was the first person to summit Changuch, another peak in the area, and was known as a “godfather” of guiding in the Himalayas, according to a video diary of Rob Jarvis, who accompanied him on that expedition in 2009.

“He was very well versed with the area, but the route they were taking is not usually travelled,” Gunjiyal said.

Many of the other missing climbers are veterans but with little experience of Nanda Devi and its surrounding peaks, he said.

Indian authorities have identified the eight missing as Moran, John McLaren, Rupert Whewell and Richard Payne, all from Britain, Anthony Sudekum and Ronald Beimel from the United States, Ruth McCance from Australia, and liaison officer Chetan Pandey from the Indian Mountaineering Foundation.

Source: Reuters

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