A huge plume of molten rock that is linked to volcanic eruptions has been detected below southern Africa.
Saturn lightning: Lightning is rarely spotted on the ringed planet. NASA's Cassini spacecraft recorded powerful lightning as it passed by.
Scientists have studied the time of day when summer rains are likely to hit all regions of the US.
Hurricane season is upon us and that could mean trouble for the 31,000 miles of Gulf oil pipelines that snake across the floor of the Gulf.
The National Oceanographic and Atmospheric Administration (NOAA) released its hurricane season forecast Thursday, acknowledging that oil released by the BP Gulf oil spill could come into play if not cleaned up.
Melting ice on Mt. Kilimanjaro is mirrored on other tropical summits around the world affected by global warming.