One starfish to rule them all

At 480 million years old, this fossil is the oldest starfish-like creature ever discovered.

Climbing the koala's family tree

Koalas are one of Australia's most beloved marsupials. How can DNA help bring them back from the brink of extinction?

Life on an airless Earth

In hidden pockets around the world, tiny creatures consume toxins and wait for their day to again rule the Earth.

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