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New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Wild Wild Life

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A mitochondrion

Life

Ocean bacteria may be closest relatives of mitochondria in our cells

The closest living relatives of the bacteria that moved into the cells of a larger organism more than a billion years ago and eventually became mitochondria powering our cells may have been identified living in hot springs

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Mars

Space

Mars used to have wet and dry seasons similar to ones on Earth

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Life

Neuron-like machinery helps anemones decide when to sting

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Chemistry

Chemical reaction used in cooking may have helped complex life evolve

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The centre of the galaxy

Space

Essential molecule for life spotted floating in space for first time

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Why do so many people believe aliens have visited Earth?

Space

Why do so many people believe aliens have visited Earth?

Comment

Life

Shortage of male turtles could be solved by splash of cold seawater

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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

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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

Sara Imari Walker, who developed Assembly Theory with chemist Lee Cronin, explains how the theory's definition of life might help us find it on other planets

Features

Environment

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

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Space

Space germs: How can we avoid contaminating other worlds?

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Life

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

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Space

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

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