Astronomer Mark Thompson reports on the large asteroid that will pass within 8,000 miles from Earth and why we were given such short notice.
A magnitude 6.7 earthquake hit the region most affected by the March 11 magnitude 9.0 quake and tsunami.
Our perception of seismic risk is skewed into thinking earthquakes at plate boundaries are more deadly. We're wrong.
Young scientists receive awards in international competition.
The U.S. plans to open a floodgate to prevent the swollen Mississippi River from flooding major cities.
The loss of digital assets has almost as great an impact on the speed of economic and emotional recovery as the replacement of brick and mortar assets.
Past events have helped researchers pinpoint when radiation exposure gets dangerous.
With no water to cool the fuel rods, they could just get hotter and eventually melt down.
Tokyo residents are stocking up on face masks and emergency supplies amid heightening fears of radiation headed their way.
The fear of a nuclear disaster still looms on top of the destruction Japan suffered following Friday's quake and tsunami.