An unprecedented fossil of a baby dinosaur curled up perfectly inside its egg is shedding more light on the links between dinosaurs and birds. The 70-million-year-old fossil preserves the embryonic ...

The heat wave that killed 125 people in Mexico earlier this month is a harbinger of a warming climate, a new report has found. In May, a heat dome baked North America from the southwestern U.S. and ...

Thousands of years ago, an owl’s messy leftovers became prime real estate for some very determined bees. Deep inside a cave ...

A fossil found in northern Egypt from a new species, Masripithecus moghraensis, is changing long held ideas about ape and human origins.

This video is no longer available. There’s not usually much activity in Northwest D.C.’s serene Mitchell Park. But did you know the rocky exterior wall holding the park’s hill in place at the corner ...