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Adult patiria starfish

Life

Starfish don't have a body - they're just a big squished head

Gene expression patterns in starfish reveal a surprising answer to the question of how they evolved their unusual body shape

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Environment

Ash from wildfires may fuel the growth of plankton in the ocean

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Health

Our cells may boost their health by eating bacteria-killing viruses

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Life

Most mammals go through the menopause - if they live long enough

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Planet Earth III book - page 11 The sharks, though, are in for a surprise because the adult seals mob them instead of fleeing (opposite bottom).

Life

See a mob of seals save their pups from a shark in Planet Earth III

Regulars

A volunteer from the North Atlantic Salmon Fund with one of the escapee salmon

Life

On the hunt for thousands of salmon that escaped Icelandic fish farm

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Environment

Warm seas blamed for the disappearance of 10 billion snow crabs

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Sea life in the Ordovician period

Life

Ocean life surged 500 million years ago due to cooler sea temperatures

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Cultured MDCK cells

Life

Some of our cells move – and they do it by emitting lots of chemicals

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Alaska brown bear fishing in the Brooks River

Life

Fat Bear Week: How Alaska's brown bears nearly double in size

Brown bears in Katmai National Park can eat up to 160,000 calories a day to prepare for winter, but how do they know it's feasting time?

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Mind

Free will: Can neuroscience reveal if your choices are yours to make?

Features

Life

Ancient trilobite stuffed itself with food almost to bursting point

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Life

Jellyfish can learn from experience even though they lack a brain

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Health

We now know how many cells there are in the human body

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