Their experiences could provide valuable lessons about evacuation versus staying put.
Soot, derived from many sources, needs to be looked at more closely by atmospheric researchers.
The most important things presidents do are often not preset items but reactive moves to events unforeseen.
Remnants from the explosions of stars in the 16th and 17th centuries are seen today.
New method to time traffic lights could help Americans burn less gasoline.
New finds from Oregon and Chile support the idea that they arrived 3,000 years earlier than previously thought.
After deadly twisters tore through the South, help came quickly for rural Macon County, Tenn. residents.