EarthSphere
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EarthSphere

The Rise of Animal Life

It Started With a Sponge

Published in The EarthSphere Blog

Arrival of the Sponges (by WM House; ArcheanArt)

A classic view on the origins of animals holds they entered onto the stage of life about 540 million years ago (mya) in an event called the Cambrian Explosion. After contemplating the move for the first four billion years of Earth’s existence, enough evolutionary momentum developed for life to take a bold step forward from…

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William House

William House

Exploring relationships between people and our planet — Stories and articles promoting science, art, environmental awareness, and human insights.