Why are thousands of female penguins washing up dead in South America?

Scientists recently restored an ancient structure in Bolivia to its former splendor.

Christopher Columbus famously sailed the ocean blue in 1492, so why isn't the New World named after him?

The only trace remaining of dogs that lived in the Americas before Europeans arrived: A common canine tumor.

Over 1,000 species of nocturnal moths come into the light, in the new book, “Mariposas Nocturnas.”

An oddball extinct animal discovered nearly 200 years ago recently confirmed its place on the mammal family tree, thanks to newly discovered DNA evidence.

Scientists recently described two new species of clown tree frogs, re-evaluating how the frogs were previously identified.