The likelihood of the upcoming climbing season on Mount Everest being canceled altogether seemed to veer from very possible to very unlikely to somewhere in between within the space of less than an hour on Tuesday as news reports came in from the world's tallest mountain.
Ukraine's acting president says his nation's military has begun "an anti-terrorist operation" aimed at pushing armed pro-Russia demonstrators out of the government buildings in eastern Ukraine that they have occupied for several days.
In Ukraine's eastern city of Donetsk, activists who want to align the country more with Russia seized a regional administration building in the center of town last weekend. NPR correspondent Ari Shapiro went inside the building Friday and reports on what it was like:
The extent of the damage isn't yet clear and the six deaths reported so far may be followed by news of other fatalities.
A day after Russian President Vladimir Putin reportedly promised that the Kremlin would withdraw some troops from near the border with Ukraine, the head of NATO says he's seen no movement as yet.
Facebook announced a pretty big purchase on Tuesday: The social media giant said it was acquiring Oculus VR, a company that makes virtual reality goggles, for $2 billion.
Wasting no time and showing no sign that he's concerned about Western objections or economic sanctions, Russian President Vladimir Putin annexed Crimea on Tuesday.
The Senate's intelligence oversight panel had its computers searched by CIA workers, who also improperly removed some documents that had been provided to the panel, Sen. Dianne Feinstein said in a lengthy and scathing speech on the Senate floor Tuesday. She said some of the actions could be illegal or unconstitutional.
The search for ousted President Viktor Yanukovych continues in Ukraine, where months of protests over his turn toward Russia and away from the European Union, along with public anger over corruption, led to his removal from office on Saturday.
Riot police stormed the main anti-government camp in central Kiev, the capital of Ukraine, on Tuesday. They fought with demonstrators armed with clubs and wearing helmets fought back.