Human drug waste threatens fish.

Researchers looking for a nocturnal bird in Indonesia accidentally identified a new species of owl.

Fighting the problem of fake drugs will require putting medications through a chain of custody like U.S. courts require for evidence in a trial.

North Korea's underground nuclear test shows it is making big strides toward becoming a true nuclear power.

There's a startling lack of scientific evidence on the best ways to help young survivors and witnesses heal.

The number of states reporting intense or widespread illnesses dropped again last week.

Big changes are in store for the nation's forests as global warming increases wildfires and insect infestations.

The breed's friendliness, intelligence and love of physical activity helped make it the most popular dog in America for the last two decades.

Pharmaceutical companies are increasingly teaming up with some of the nation's top universities, recruiting campus scientists as partners.