Science

by Adam Glanzman

by Sam Frizell

by Dan Kedmey

by Michael D. Lemonick

by Dan Kedmey

by TIME Photo

by Jeffrey Kluger

by Naina Bajekal

by Elizabeth Barber

by Michael D. Lemonick

by TIME Staff

by TIME Staff

by Jeffrey Kluger

by Noah Rayman

by Noah Rayman