Green sea turtles recover in Florida, Mexico

Long considered an endangered species, green sea turtles in Florida and Mexico have bounced back and officials said Friday they are seeking to change the turtles' protected status to "threatened."

Cheetahs in race to survive

The cheetah, the world's fastest land animal, survived mass extinction during the last ice age 10,000 years ago.

Study finds many white marlin are actually look-alike species

They are sleek, elusive predators, slipping through the deep violet of the ocean depths. The challenge of catching white marlin has made them a prime target in fishing tournaments, with the winning catch at last summer's ...

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