Powerful quakes did not cause a tsunami.

One question from a Japanese girl proves to be harder to answer than he thought.

Japan earmarks almost $50 billion for rebuilding.

Now officials say this crisis is equivalent to 1986's Chernobyl disaster.

VIDEO: Japan tightens regulations for its nuclear power plants.

This one is far less severe than last month's 9.0 quake.

The first attempt to plug the crack fails. U.S. engineers have begun studying the Fukushima Daiichi plant disaster. Japan's farmers are hit hard by radiation concerns.

An accident two days ago sent workers at the Fukushima Dai-ichi power plant to the hospital.

Nuclear radiation leakage continues from power plant.

Japanese officials have also suspended milk and spinach sales from the region.