According to a new report, unless more is done to combat climate change, extreme weather like the drought now gripping California will only grow more common. Marcio Jose Sanchez/AP hide caption

itoggle caption Marcio Jose Sanchez/AP

This statistical map guided searchers to an Air France flight that disappeared into the Atlantic Ocean in 2009. C. Keller/Metron hide caption

itoggle caption C. Keller/Metron

The Russian ship Pyotr Velikiy (Peter the Great), seen here docked in the Cypriot port of Limassol in February, is part of the team involved in escorting shipments of Syria's chemical weapons material for destruction. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

Former missile officer Edward Warren says he and others felt enormous pressure to cheat. Courtesy of Edward Warren hide caption

itoggle caption Courtesy of Edward Warren

In this undated photo provided by the U.S. Department of Energy, a shipment of nuclear waste arrives at the Waste Isolation Pilot Plant, near Carlsbad, N.M. U.S. Department of Energy, Carlsbad Field Office/AP hide caption

itoggle caption U.S. Department of Energy, Carlsbad Field Office/AP

Cat Or Dog? Sure, you can easily tell the difference. But a machine may not be able to guess on the first try. iStockphoto hide caption

itoggle caption iStockphoto

The National Ignition Facility's 192 laser beams focus onto a tiny target. LLNL hide caption

itoggle caption LLNL

The Chinese flag is seen in front of a view of the moon at Beijing's Tiananmen Square in December, when China's first moon rover touched the lunar surface. That feat was widely celebrated — but observers believe the rover has now run into serious trouble. Mark Ralston/AFP/Getty Images hide caption

itoggle caption Mark Ralston/AFP/Getty Images

An unidentified inspector from the International Atomic Energy Agency examines equipment at the Natanz facility in Iran on Monday. Kazem Ghane/AP hide caption

itoggle caption Kazem Ghane/AP

This composite image shows new details of the aftermath of a massive star that exploded and was visible from Earth over 1,000 years ago. Chandra X-ray Observatory Center/NASA hide caption

itoggle caption Chandra X-ray Observatory Center/NASA