'Smart' face masks promise high-tech protection
BBC Click's Lara Lewington puts some "smart" face masks to the test.
from BBC News - Technology https://ift.tt/3pxMQKy
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US diplomats to leave consulate in Chengdu in tit-for-tat closures
China's decision to close the US mission came after the US shut China's consulate in Houston. from BBC News - World https://ift.tt/301V5Vy
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