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|作者：董静 文章来源：中国日报网 点击数：8 更新时间：2020/3/19|
>Smallest dinosaur of all time
A hummingbird-sized dinosaur identified from a skull trapped in amber may be the smallest dinosaur from the Mesozoic Era ever found, according to a paper newly published in renowned scientific journal Nature.
Scientists investigated the tiny, exceptionally well-preserved birdlike skull found in amber excavated from northern Myanmar's Hukawng Valley in 2016.
Radioisotope dating of zircon crystals in the amber from this site suggests it was roughly 99 million years old.
The skull is only 7.1 millimeters long, indicating the dinosaur was similar in size to the bee hummingbird – the smallest living bird.
>Claw machine with toilet rolls
An amusement arcade has replaced toys with toilet rolls in a claw machine as coronavirus fears have sparked panic buying across the UK.
Eddy Chapman, 34, has come up with a plan to halt the hoarding in Bridlington, East Yorkshire, after being baffled by terrified shoppers cleaning supermarket shelves in the past few days.
The arcade owner has replaced the stuffed animals in the grab machine with toilet paper rolls which punters can try to grab for just 30 pence a go.
Chapman said this was a way to spread some cheer in the wake of the coronavirus crisis.
He said: "I think all this panic buying of toilet rolls has been ludicrous, and so I came up with this idea to hopefully get people to calm down."
>COVID-19 safety dance goes viral
A video featuring a catchy Vietnamese song and an accompanying dance about the necessity of hand-washing during the coronavirus crisis has racked up more than 2 million views on video app TikTok.
Cribbing the tune from pop song Jealous – or Ghen in Vietnamese – by singers Erik and Min, the ministry of health released an animated video with lyrics telling its citizens to "push back the virus Corona, Corona".
The song provides guidance on how to prevent an infection, such as washing hands by "rub, rub, rubbing evenly" and limiting "visits to crowded places".
"We want the song to give fire and reduce tension for experts, doctors, medical workers and millions of laborers who are on the frontline to fight this epidemic daily," the health ministry posted in the video's description.
>Third-hand smoke is dangerous
A new study out of Yale University says third-hand smoke - the tobacco contaminants that adhere to walls, bedding, carpet and other surfaces until a room smells like an ashtray - can actually cling to a smoker's body and clothes as well.
Those potentially toxic chemicals, including nicotine, can then be released into environments where smoking has never occurred, like your movie theater, according to the study.
Even more disturbing: The study found those chemical exposure levels could be the equivalent of between one and 10 cigarettes by the end of the movie.
"People are substantial carriers of third-hand smoke contaminants to other environments," said study author Drew Gentner, an associate professor of chemical and environmental engineering at Yale.
The study, published in the journal Science Advances, may be the first to show that people can transmit nicotine and other potentially toxic chemicals via their clothing after smoking, he said.
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