Evolution is responsible for Earth’s stunningly diverse spectrum of life, but that wasn’t always the case. In fact, the ...

A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million ...

The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition ...

Scientists say Earth's earliest animals reproduced by cloning themselves, a strategy that limited competition and slowed ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a ...

A remarkable fossil hidden in a museum collection for decades is helping scientists rethink one of the biggest mysteries in ...

Despite its incredible diversity, there is a universal tie between all life on Earth, regardless of species. This unifying ...

Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and skeleton-free, explaining why their fossils don’t appear until much later. By ...

A look at how evolution could reshape animals into strange new forms millions of years from now.

The Cambrian Explosion in which life on Earth underwent massive diversification was likely triggered by eccentricities in Earth’s orbit around our Sun. Or so say the authors of a new paper just ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...