A zoo that has the last Sumatran rhino in the United States will send him to Indonesia in an attempt to breed him and help preserve his endangered species.

James Holmes was formally sentenced to life in prison for the 2012 Colorado movie theater shooting. The judge told the victims’ families that they have his admiration.

See how a laboratory in Boston is turning poop from extremely healthy donors into medicine for really sick patients. CNN’s Elizabeth Cohen reports.

Researchers have developed a way to study and monitor honey bees by outfitting them with tiny sensors to track their movements.

The Sato Project rescues, rehabilitates and finds new homes for dogs that are abandoned at a beach in Puerto Rico known as “Dead Dog Beach.”