Like the other 14 biggest earthquakes since 1900, the magnitude 8.9 event – that shook Japan and triggered tsunamis that swept the Pacific – was created by a piece of the Earth's crust shoving down into the planet's interior.
8.9 earthquake: A series of large foreshocks preceded Japan's earthquake, the fifth largest ever recorded.
Japan earthquake early Thursday off the eastern coast was a magnitude 6.3. It's the second Japan earthquake in the past two days.
A tsunami warning is out for the eastern seaboard of Japan.
Vanishing? An iceberg that broke from the Jacobshavn glacier floated in the water off Greenland. The berg illustrates how fast the glacial ice is melting in the Arctic and the potential for rising sea levels.
Delightful 'Pushing Daisies' now out on DVD, surging dance music from Congo's Kasai Allstars, a documentary about the fabled Warner Bros. studio, and more.
Off the beaten tourist path in Japan.