time travel
A dog dressed as Marty McFly from Back to the Future attends the Tompkins Square Halloween Dog Parade in 2015. New research says time travel might be possible without the problems McFly encountered. Timothy A. Clary/AFP via Getty Images hide caption
This Is How You Lose The Time War, By Amal El-Mohtar and Max Gladstone NPR hide caption
In Back to the Future Part II, Marty McFly (Michael J. Fox) slips on his Nike sneakers and rides a Mattel hoverboard in front of a Texaco gas station. Courtesy of The Kobal Collection hide caption
Oceans, and the innards of Earth itself, are the final frontiers of our planet. Expect amazing discoveries as explorers document more and more of this unseen realm. Hulton Archive/Getty Images hide caption