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love

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Life

Human sex from the inside out

Sex as you've never seen it before: the first video of a couple getting it together in an MRI scanner

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Why geeks get the girls

Life

Why geeks get the girls

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It's true: all the taken men are best

Life

It's true: all the taken men are best

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Life

'Cuddle chemical' may create green-eyed monster

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Fathers aren't dispensable just yet

Life

Fathers aren't dispensable just yet

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Health

IVF discounts beat cash rewards for research eggs

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Are lab-grown human sperm the real thing?

Life

Are lab-grown human sperm the real thing?

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Life

Size doesn't matter to some women

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'Hippy' monkey is a killer when starved of sex

Life

'Hippy' monkey is a killer when starved of sex

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Review: Sex in shades of grey

Humans

Review: Sex in shades of grey

Science is undermining the notion that there are only two sexes and presenting a broad spectrum – from male to female and everything in between, says the author of Between XX and XY

Books & Arts

Life

Monkey 'stock market' prone to fluctuations too

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Life

'Worm porn' video shows details of nematode sex

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Humans

For scientists about to rock, we salute you

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Life

Giant sperm stretch back millions of years

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