An invasive creature native to South America has been spotted at a Northern California park, prompting a search, rangers ...

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show opening to the public on Monday.

A large Argentine black and white tegu was spotted by hikers in Joseph D. Grant County Park in Santa Clara County.

People often marvel at how much—and how little—intelligence is displayed in the animal kingdom. Often the subject of research ...