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3D0DY3R In this image supplied by Parks Australia, a young boy walks amongst red crabs during their annual migration, Oct. 19, 2025 on Christmas Island, Australia. (Parks Australia via AP)

Christmas Island's red crabs undergo their annual migration

Every year, more than 100 million red crabs travel across Christmas Island in Australia, from the rainforest to the sea, in order to mate and spawn

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Technology

Analogue computers could train AI 1000 times faster and cut energy use

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Health

Can't focus after a bad night's sleep? Your dirty brain is to blame

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Physics

Quantum-inspired algorithm could help reveal hidden cosmic objects

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Health

US public health system is flying blind after major cuts

Analysis

Environment

Why Hurricane Melissa is one of the strongest Atlantic storms ever

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Health

Men may have to exercise more than women to get same heart benefits

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Health

Unpicking the genetics of fibromyalgia sheds new light on its causes

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Technology

Teenager builds advanced robot hand entirely from Lego pieces

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Life

We may finally know why birds sing at dawn

Birds all over the world break into a dawn chorus every morning – now experiments in zebra finches suggest both a mechanistic and a functional explanation for this phenomenon

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Health

Testosterone helps libido in menopause – can it treat other symptoms?

Analysis

Chemistry

Civet coffee: The real chemistry behind this bizarre luxury drink

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Space

The Martian permafrost may be hiding veins of habitable liquid water

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Life

Cloud microbes' colours could help us detect life on other planets

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