Hurricane Gil weakened into a tropical storm in the eastern Pacific Ocean on Saturday and is not expected to pose any threat to land, according to U.S. forecasters. The U.S. National Hurricane Center ...

Forget photosynthesis—these marine communities rely on chemosynthesis to survive in darkness, and under intense pressure.

Large distant earthquakes in the past have generated tsunamis that caused significant damage and deaths in Hawaii. In 1946, a magnitude-7.9 Aleutian Islands, Alaska earthquake generated a tsunami that ...