Science

by Helen Regan

by Helen Regan

by Nolan Feeney

by Jeffrey Kluger

by Michael D. Lemonick

by Rishi Iyengar

by TIME Video

by Michael D. Lemonick

by Emily Barone and Lon Tweeten

by Rishi Iyengar

by Jeffrey Kluger

by Alexandra Sifferlin

by Haley Sweetland Edwards

by Jack Linshi

by Michael D. Lemonick