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Micro-ratchet spins pearls with perfect symmetry

Micro-ratchet spins pearls with perfect symmetry

It took humans hundreds of thousands of years to invent the wheel, but molluscs have been turning out flawless spheres for hundreds of millions of years.

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Alien megaprojects: The hunt has begun

Life

Alien megaprojects: The hunt has begun

Features

NASA planet-hunter is injured and resting

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Alien hunting: how to find DNA on Mars

Life

Alien hunting: how to find DNA on Mars

Analysis

Life

Meteorite's left-handed molecules a blow to ET search

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Curled-up young fern frond

Life

Life: is it inevitable or just a fluke?

Features

Budget cuts put alien search on hold

Space

Budget cuts put alien search on hold

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Alien-life claims spark monster mud-slinging

Life

Alien-life claims spark monster mud-slinging

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To boldly sow: Seeding the galaxy with Earthly life

Life

To boldly sow: Seeding the galaxy with Earthly life

Features

Could we detect trees on other planets?

Life

Could we detect trees on other planets?

The shadows cast by alien trees should change the amount of light their host planet reflects as it orbits its star

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Life

Arsenic-based bacteria point to new life forms

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Life

Stingy aliens may call us on cheap rates only

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Life

Look for Mars life with laughing gas

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Life

District 9: Science is the casualty in human-alien conflict

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