Fossils show earliest animal trails

(PhysOrg.com) -- Trails found in rocks dating back 565 million years are thought to be the earliest evidence of animal locomotion ever found, Oxford University scientists report.

Biologist explains the science of 'de-extinction' in new book

Tired of answering questions about cloning mammoths, Beth Shapiro, a professor of ecology and evolutionary biology at UC Santa Cruz, wrote a book called How to Clone a Mammoth. (Spoiler Alert: You can't actually clone a mammoth.)

Fossils on the Edge of Forever

Astrobiologists have not yet found alien life on other planets. But the fossil record has evidence of aliens of another sort: the Ediacarans that lived on Earth millions of years ago.

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