This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

Focused on Cambrian fossils, the study reanimates a species long trapped in the pages of forgotten paleontology.

Environmental stress in evolution can be reframed as a powerful engine of innovation, not simply a barrier to survival.

About 540 million years ago, our planet suddenly erupted with life, filling our oceans with a diversity of complex life. This is known as the Cambrian ...

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Scientists say these are all markers of animal consciousness, a sign that animals, from Labrador retrievers to cuttlefish to ...

The control system that may have emerged at the Cambrian explosion is known as HIF-1α (hypoxia-inducible factor 1). In modern animals, this system helps cells detect and adapt to changes in ...

A remarkable fossilized larva has been discovered by scientists with its brain and guts still intact. The fossilized creature ...

Talk about understatement. The Burgess fossils tell nothing less than the story of the Cambrian explosion—evolution's Big Bang—when relatively simple organisms rapidly diversified into the ...