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biology

Birds have childhood sweethearts that they stay with as adults

Life

Birds have childhood sweethearts that they stay with as adults

Whooping cranes form long-term monogamous relationships, and over half of couples first get together before they are both sexually mature

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Light pollution is set to double between now and 2050

Earth

Light pollution is set to double between now and 2050

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Adelie penguins

Life

Let's hope chickless penguin colony can come back from the brink

Comment

crossword

Health

Making your brain cells longer could help ward off Alzheimer’s

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How a tiny fly can ‘scuba dive’ in a salty and toxic lake

Life

How a tiny fly can ‘scuba dive’ in a salty and toxic lake

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Scorpion

Life

Venom: The show with an unsettling sting in its tale

Culture

Josiah Zayner

Humans

Biohackers are using CRISPR on their DNA and we can't stop it

Insight

leader

Humans

Why the male infertility crisis could be good news for women

Leader

man and baby

Health

We're heading for a male fertility crisis and we're not prepared

Features

porpoise

Life

Porpoises twist laws of physics to aim their focused sonar beams

Porpoises scrunch up their heads to direct their sonar beams and keep prey within "sight". Understanding how they point sound could help us design better sonar

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Earth

Human arrivals wiped out the Caribbean’s giant ground sloths

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Life

Giant coconut crab sneaks up on a sleeping bird and kills it

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Health

Boy with a genetic disease has had almost all his skin replaced

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Life

Sheep learn to recognise celebrity faces from different angles

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