Water and air pose completely different challenges to animals on a number of levels.

Before the rise of dinosaurs, Earth was a vastly different place, teeming with life in forms that were strange and unlike ...

Fossils offer a glimpse into Earth's ancient life, revealing the origins and evolution of complex organisms. Discoveries like ...

Around 252 million years ago, Earth faced a catastrophic event that changed the course of life on our planet forever. This mass extinction event wiped out nearly 96% of marine life, 70% of land ...

The motivation behind everything that animals do is to stay alive, at least until they have produced offspring. Any species ...

New research is shaking up our understanding of evolution by revealing that some species may not evolve gradually at all. Instead, scientists discovered that certain marine worms experienced an ...

The Jurassic franchise’s wildest creature yet, Distortus rex, is part T. rex, part nightmare. Here's what to expect in ...

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

“It may be doubted,” Darwin wrote, “if there are any other animals which have played such an important part in the history of the world as these lowly organized creatures.” ...

A new study published in the Proceedings of the National Academy of Sciences reveals that smaller islands within the Wallacea ...

Nature’s least loved animals are dying fast. This could make the environment stinky and pathogens unstoppable.