David Zalubowski/AP
Charles Sykes/Invision/AP and Paul Hennessy/SOPA Images/LightRocket via Getty Images
Leonid Faerberg/SOPA Images/LightRocket via Getty Images
Drew Angerer/Getty Images
PLOS Genetics
Tom Williams/CQ-Roll Call, Inc via Getty Images
d3sign via Getty Images
Stephen M. Dowell/Orlando Sentinel/Tribune News Service via Getty Images
Joseph Prezioso/AFP via Getty Images