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Greg Rouse, Scripps Oceanography The Osedax body is visible inside the root of the tooth on the left and the piece emerging from the lower left is the gelatinous tube of the Osedax worm. The worm can retract inside when disturbed so we can see it properly in the picture.

Life

Zombie worms devour shark teeth that fall to the ocean floor

Deep-sea Osedax worms, known to consume whale bones and the remains of bony fish, also feed on shark teeth after the predators die

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Why have orcas been damaging and sinking so many boats?

Life

Why have orcas been damaging and sinking so many boats?

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How a radical redefinition of life could help us find aliens

Life

How a radical redefinition of life could help us find aliens

Features

Environment

UK and Ireland suffer one of the most severe marine heatwaves on Earth

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Humans could bring microbes into space

Space

Space germs: How can we avoid contaminating other worlds?

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Environment

'Doomsday' glacier in Antarctica isn't as vulnerable as feared

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Life

1.6-billion-year-old steroids may be traces of earliest complex life

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The Allen Telescope Array

Space

Fake alien message sent to Earth to prepare us for first contact

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Why sending messages to extraterrestrials is controversial

Space

Why sending messages to extraterrestrials is controversial

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Environment

Ozone layer treaty pushed back ice-free Arctic summers up to 15 years

A 1987 treaty to ban ozone-destroying gases helped delay the first Arctic summer with no ice, which is now projected to happen by 2037 at the earliest

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Life

The hunt for the South Island kōkako, New Zealand’s long-lost bird

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Life

Why the origins of life remain a mystery – and how we will crack it

Features

Environment

Antarctic ice melt may be reversible due to rising land beneath

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Life

Surprising culprit found that killed 95% of a sea urchin population

News