Science

by Helen Regan

by Alex Fitzpatrick

by Jack Linshi

by Sam Frizell

by Victor Luckerson

by Jeffrey Kluger

by Samantha Grossman

by Jeffrey Kluger

by TIME Photo

by Eliza Berman

by Maya Rhodan

by Jeffrey Kluger

by Noah Rayman

by Noah Rayman

by Katy Steinmetz