Shackleton's lost shipwreck discovered off Antarctica

One of the world's most storied shipwrecks, Ernest Shackleton's Endurance, has been discovered off the coast of Antarctica more than a century after its sinking, explorers announced Wednesday.

How Hydra animals regenerate their own heads

A new paper in Genome Biology and Evolution maps out for the first time how Hydra, which are a group of small aquatic animals, can regenerate their own heads by changing the way that their genes are regulated, known as epigenetics.

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