Dredging ships have sucked millions of tons of sand from the bed and shores of China's Poyang lake, drastically altering its ability to function.
New plans to build a sluice gate now further threaten the delicate ecosystem reut.rs/3ze3Xq0 1/6
Decades of mass urbanization in China have fueled rampant demand for sand to make glass, concrete and other materials used in construction.
The most desirable sand for this industry comes from rivers and lakes rather than deserts and oceans 2/6
Much of the sand used to build the country’s megacities has come from Poyang Lake, in the eastern province of Jiangxi.
Already ravaged by sand mining, the lake now faces a biodiversity crisis 3/6
At the start of this year, the provincial government revived a project to alleviate drought by regulating water flows between the Yangtze River and Poyang Lake with a 3km-long sluice gate 4/6
The shallow lake, a national nature reserve, is also a rest stop for over 300 species of migratory birds, including the critically endangered Siberian crane 5/6
A top medical organization has thrown its weight behind calls to cancel the Tokyo Olympics saying hospitals are already overwhelmed as the country battles a spike in coronavirus infections less than three months from the start of the Games reut.rs/3tWE2jA 1/5
The Tokyo Medical Practitioners Association representing about 6,000 primary care doctors said hospitals in the Games host city 'have their hands full and have almost no spare capacity' amid a surge in infections 2/5
A jump in infections has stoked alarm amid a shortage of medical staff and hospital beds in some areas of the Japanese capital, promoting the government to extend a third state of emergency in Tokyo and several other prefectures until May 31 3/5
More than 30 South Korean college students shaved their heads in front of the Japanese embassy in Seoul to protest Japan's decision to release water from its crippled Fukushima nuclear plant into the sea, Hyun Yi reports reut.rs/3v1NL99 1/4
Police periodically dispersed crowds, who chanted and held placards, but did not stop the event from taking place, though there is an anti-pandemic ban on gatherings larger than 10 people 2/4
The protesters who were shaved were draped in protective sheets emblazoned with messages condemning the Japanese plan and calling for it to be ditched 3/4
Researchers unveiled the first calculation of the total Tyrannosaurus rex population during the estimated 2.4 million years that this fearsome species inhabited western North America during the twilight of the age of dinosaurs reut.rs/3gjcAJs 1/5
Their analysis put the total number of T. rex individuals that ever existed at about 2.5 billion, including approximately 20,000 adults alive at any one time 2/5
They considered factors including the size of its geographic range, its body mass, growth pattern, age at sexual maturity, life expectancy, duration of a single generation and the total time that Tyrannosaurus rex existed before extinction 66 million years ago 3/5
It is an eerie, foreboding, reverberating tune, enough to send a tingle down your spine reut.rs/32cASfQ
From communication to construction, spiderwebs may offer an orchestra of information, says Markus Buehler, engineering professor at the Massachusetts Institute of Technology, who has been using artificial intelligence to study them
🕷️ Buehler and his team of researchers created 3D models of spiderwebs when the arachnids were doing different things - such as construction, repair, hunting and feeding
A third of COVID-19 survivors in a study of more than 230,000 mostly American patients were diagnosed with a brain or psychiatric disorder within six months, suggesting the pandemic could lead to a wave of mental and neurological problems, scientists said reut.rs/2Q69eON
Researchers who conducted the analysis said it was not clear how the virus was linked to psychiatric conditions such as anxiety and depression, but that these were the most common diagnoses among 14 disorders they looked at
Post-COVID cases of stroke, dementia and other neurological disorders were rarer, the researchers said, but were still significant, especially in those who had severe COVID-19
Malaysia said it sent 267 containers of illegal plastic waste back to their countries of origin since 2019 and is in the process of returning 81 more reut.rs/31T5XVK 1/4
Malaysia became the destination of choice for the world’s plastic waste after China banned imports in 2018, but is struggling to fend off a deluge of generally unlicensed, unrecyclable garbage 2/4
New U.N. rules on the trade of hazardous waste under the Basel Convention came into force on Jan. 1, intended to discourage the production of hard-to-recycle plastics and to prevent rich countries dumping trash in the developing world 3/4