The first graduating class of 'wildlife detector dogs' will soon be stationed at ports around the U.S., part of a growing effort to stem the illegal trade of flora and fauna.

After 46 years at the space agency, one of America's most famous climate scientists will now focus on rallying support for the fight against climate change.

Scientists at the University of Georgia have created a microbe that converts carbon dioxide into biofuel, a discovery that might boost the battle against climate change.

The list includes two natural Western landscapes, two sites dedicated to icons of African-American history, and the first National Park Service unit in Delaware.