Viktor Yanukovych, who says he's still the president of Ukraine, at his news conference Friday in the southern Russian city of Rostov-on-Don. Yuri Kochetkov /EPA /LANDOV hide caption

itoggle caption Yuri Kochetkov /EPA /LANDOV

On Friday, armed men took control of the international airport in the city of Simferopol, on the Crimean peninsula. Gunmen took control of another airport in Crimea, as well. David Mdzinarishvili/Reuters/Landov hide caption

itoggle caption David Mdzinarishvili/Reuters/Landov

Who else might be watching? Britain's spies collected millions of images from video chats, according to the latest secrets spilled by NSA leaker Edward Snowden. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Raindrops on a windshield blurred the view of a woman Wednesday in San Francisco. California, which is suffering through a drought, is getting some much-needed precipitation this week. Ben Margot/AP hide caption

itoggle caption Ben Margot/AP

Flags fly outside the Crimean parliament building in Simferopol on Thursday during a rally by pro-Russian protesters. Gunmen seized government buildings in the city. David Mdzinarishvili /Reuters/Landov hide caption

itoggle caption David Mdzinarishvili /Reuters/Landov

The fossilized remains of a whale that washed up on a shore in what's now Chile more than 5 million years ago. Vince Rossi/Smithsonian Institution hide caption

itoggle caption Vince Rossi/Smithsonian Institution