From Tiny to T-Rex: Why Life Got Large

Why did life grow from single-celled organisms into complex, multi-celled giants?
29 June 2018
Presented by Marika Ottman
Production by Marika Ottman.

Fossils at Mistaken Point

Fossils found at Mistaken Point


4 billion years ago, life on earth looked nothing like it does today. In fact, the oceans contained only single-celled microbes. At some point, these single-celled organisms began to work together, forming complex, multi-celled creatures, which then suddenly became much larger. The question is, why? Emily Mitchell studies one of the earliest animals believed to exist, and explained to Marika Ottman why she thinks these creatures got bigger when they did…


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