Local and federal officials in Brazil were warned of looming oxygen shortages nearly a week before crisis struck in the city of Manaus, the...
It’s as if 10 of the world’s largest commercial jets fell out of the sky, every day for an entire year.
A new treatment could restore some mobility in people paralyzed by strokes 
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This robot automatically tucks its limbs to squeeze through spaces 
Greta Thunberg’s new book urges the world to take climate action now