The sudden eruption in central Japan surprised and stranded hikers, and caused one death. A hiker managed to shoot video of the shocking sight of an immense billowing gray cloud speeding toward them.
Catalonia's leader has set a November date for a vote on whether the northeast region of Spain should become independent. Spain's central government has said it will block the vote.
A U.S. probe cost $637 million to get to Mars; an Indian mission cost about a tenth as much. There are at least a few reasons why, both teams agree — starting with the differing shapes of each orbit.
Apple's very bad week with bending phones and iOS flaws, a new bug that's so nasty it has two names and the social network of the moment lead our look back at the top tech headlines.
Is food the oldest instrument of diplomacy? The U.S. State Department just sent award-winning chef Tim Byres to Kyrgyzstan, where he ate a sheep's eye and wowed his hosts with Texan spices.
There's a long tradition of denial, superstition and wishful thinking when it comes to health. Ebola is no exception. It's all too human to let fear interfere with facts.