Why East Coast earthquakes travel so far

A rare 5.8 earthquake that rattled the eastern United States on Tuesday was felt over a wide area from Toronto, Canada down to Georgia due to the hard, brittle quality of the ground, experts said.

Heatwave kills four in Japan

A heatwave stifled Japan Sunday as the temperature topped 40 degrees Celsius (104 Fahrenheit ) in two cities, leaving at least four people dead over the weekend, officials and reports said.

Japan lifts evacuation order for town near doomed nuke plant

Japan's government on Saturday lifted a 4 1/2-year-old evacuation order for the northeastern town of Naraha that had sent all of the town's 7,400 residents away following the disaster at the nearby Fukushima nuclear plant.

Nuclear contamination found beyond Japan no-go zone

High levels of radioactive contamination have been found in soil in the capital of Japan's Fukushima prefecture, a study showed Wednesday, prompting calls to make the area a voluntary evacuation zone.

Stairwell evacuation study finds 'what we know we don't know'

Most of the time, we use the stairs in buildings—especially in high-rise structures—only as a back-up for faster elevators and escalators, but during a fire or other emergency, stairs become our primary passage to survival. ...

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