Wednesday, 21 October 2020

The C.D.C. updates its definition of ‘close contact’ in relation to infection risk.


By BY GINA KOLATA from NYT World https://ift.tt/3jkCx9e
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Nasa launches mission to save falling space telescope

A Nasa-funded robot has blasted off to catch a falling telescope in mid-orbit and blast it back to safety before it burns up. from BBC New...