by TIME Staff
Science

by Kevin McSpadden

by Eliana Dockterman

by Eliana Dockterman

by Jeffrey Kluger
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by Jeffrey Kluger

by Sabrina Toppa
by Helen Regan

by Jeffrey Kluger

by Helen Regan
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by Alexandra Sifferlin

by Jeffrey Kluger

by Jeffrey Kluger

by Jeffrey Kluger

by Sarah Begley