As legend it has it, finding a four-leaf clover is supposed to be a sign of good luck. If we put our collective scientific knowledge to the task, however, we stand a better chance of finding a lucky charm. Scientific American editor Eric R. Olson explains.
Video credits: Edited by Kathryn Free & Eric R. Olson
3 hours ago — Leila Falls and Christopher Intagliata
Medical & Biotech
May 5, 2016 — Reuters
May 3, 2016 — NASA's Goddard Space Flight Center
April 27, 2016 — Reuters