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Strong bones may be vital for maintaining memory in old age

Health

Strong bones may be vital for maintaining memory in old age

A hormone secreted by bone reverses age-related memory loss in mice, hinting that strengthening your bones may protect you from some of the ravages of old age

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Birds have childhood sweethearts that they stay with as adults

Life

Birds have childhood sweethearts that they stay with as adults

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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

leader

Humans

Why the male infertility crisis could be good news for women

Leader

Josiah Zayner

Humans

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

Insight

man and baby

Health

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

Fertility has been considered a woman's problem for so long, but sperm counts are dropping and men have a ticking clock too. It's time to redress the balance

Features

Life

Porpoises twist laws of physics to aim their focused sonar beams

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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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