Storm Elsa moving on Florida after battering Cuba

As it moved toward Florida's Gulf Coast early Wednesday, Elsa weakened to a tropical storm, though it still barreled inland with gusty winds and heavy rains, the US National Hurricane Center said.

Ant colonies help evacuees in disaster zones

An escape route mapping system based on the behavior of ant colonies could give evacuees a better chance of reaching safe harbor after a natural disaster or terrorist attack by building a map of showing the shortest routes ...

Tornado leaves five dead in Iowa

A tornado that ripped through the midwestern US state of Iowa killed five people and left dozens injured, officials said, with homes smashed to pieces and cars thrown through the air.

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