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Seals only sleep with half their brain when they're out at sea

Life

Seals only sleep with half their brain when they're out at sea

Northern fur seals mostly sleep with half their brain while they’re at sea, but sleep with all their brain while on land – unlike any other animal studied

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Chimp evolution was shaped by sex with their bonobo relatives

Life

Chimp evolution was shaped by sex with their bonobo relatives

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We may have got the evolution of our big brains entirely wrong

Humans

We may have got the evolution of our big brains entirely wrong

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World's most-spoken languages may have arisen in ancient Iran

Humans

World's most-spoken languages may have arisen in ancient Iran

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People adapted to the cold and got more migraines as a result

Humans

People adapted to the cold and got more migraines as a result

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Horses remember if you smiled or frowned when they last saw you

Life

Horses remember if you smiled or frowned when they last saw you

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Male fruit flies feel pleasure when they ejaculate

Life

Male fruit flies feel pleasure when they ejaculate

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Dog brain scans show if they are looking at a happy or sad face

Life

Dog brain scans show if they are looking at a happy or sad face

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Heavy metal poisoning may be changing birds’ personalities

Earth

Heavy metal poisoning may be changing birds’ personalities

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People walking

Technology

Electrodes fitted behind your ear can make you walk faster

A type of electrical skull stimulation makes us step out faster with longer strides – a finding that could help people with balance disorders to walk more easily

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Health

Brain zap can make people re-experience old dreams while awake

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Life

Surprise! Having a big brain really does mean having less muscle

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Life

Birds 'dream sing' by moving their vocal muscles in their sleep

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Life

Young 'dinosauromorphs' may have begged for food like baby birds

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