Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...

The oldest terrestrial materials ever dated by scientists are extremely rare zircon minerals that were discovered in western ...

The molten rock was hot enough to melt the surrounding rocks and release massive amounts of carbon dioxide into Earth's ...

Worms radically reorganized their genomes during their move from sea to land, supporting the theory of punctuated equilibrium in evolution.

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.

Therefore, he said, monotremes provide a window into the origins of mammals on Earth. Peering inside an ancient fossil This fossilized humerus bone was discovered in 1993 at Dinosaur Cove.

The search for Earth’s twin might focus on rocky planets with similar bulk properties — mass, radius and habitable zone location — as well as a comparable collision history.” The team emphasized how ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.

The surprising evolution of the weirdest animals on Earth, according to a new study. Hand et al. via CNN Newsource A cross-section comparison shows (from left) a Kryoryctes (A) ...