Science

by Eliana Dockterman

by Noah Rayman

by Adam Glanzman

by Laura Stampler

by Helen Regan

by Michael D. Lemonick

by Justin Worland

by Laura Stampler

by Naina Bajekal

by Helen Regan

by Michael D. Lemonick

by Tara Thean

by Jeffrey Kluger

by TIME Staff

by Nolan Feeney