Some dinosaurs were dying out before asteroid strike

Many dinosaur species were already on their way out before the asteroid strike that's believed to have led to their mass extinction.

Nearby supernovae affect climate, and help life thrive

A Danish physicist has concluded that the explosion of nearby supernovae  has strongly influenced the development of life on Earth.

Evolution triggered by climate change

Six distinct waves of mammal species diversity in North America over the last 65 million years were driven primarily by climate change, new research suggests.