Science

Ellen DeGeneres takes a photo with, from left, Kevin Spacey, Angelina Jolie, Julia Roberts, Brad Pitt, Jennifer Lawrence, and Jared Leto during the Oscars at the Dolby Theatre on Sunday, March 2, 2014, in Los Angeles. (Photo by John Shearer/Invision/AP)

The west branch of the Susquehanna River flows past Jersey Shore, Pa. on Sunday March 23, 2014. About a third of the borough (population 4,300) is in a flood hazard zone and nearly 470 homes in town are expected to see flood insurance premium hikes because of changes to the National Flood Insurance Program. (AP Photo/Ralph Wilson)

In this June 9, 2014 photo, a petroleum industry worker stands on an oil and gas rig on a well pad, in New Castle, a small farming and ranching settlement on the Western Slope of the Rockies, in Colo. Four in 10 new oil and gas wells near national forests and fragile watersheds or otherwise identified as higher pollution risks escape federal inspection, unchecked by an agency struggling to keep pace with America's drilling boom, according to an Associated Press review that shows wide state-by-state disparities in safety checks. (AP Photo/Brennan Linsley)

In this image taken on December 1, 2012, Food Editor, J. M. Hirsch, poses for a portrait in Concord, N.H. (AP Photo/J.M. Hirsch, Sharon Ramer)

In this May 16, 2015 photo, former slave fisherman Myint Naing, center, hugs his niece Kyi Wai Hnin, right, and nephew Kyaw Min Tun following his return to his village in Mon State, Myanmar. Myint, 40, is among hundreds of former slave fishermen who returned to Myanmar following an Associated Press investigation into the use of forced labor in Southeast Asia's seafood industry. (AP Photo/Gemunu Amarasinghe)

Michael Giarrusso in the Associated Press office on Tuesday, Oct. 29, 2013 in New York. (AP Photo/Peter Morgan)

In this January 15, 2013 photo taken with an iPod Touch and originally posted to Instagram from Pyongyang, a woman walks on a Pyongyang street in front of the pyramid-shaped 105-story Ryugyong Hotel, which North Korea began building in 1987 and it is yet to be complete. (AP Photo/David Guttenfelder)