Humans
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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Humans
Why geeks get the girls
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Humans
It’s true: all the taken men are best
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Humans
‘Cuddle chemical’ may create green-eyed monster
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Humans
Fathers aren’t dispensable just yet
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Health
IVF discounts beat cash rewards for research eggs
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Health
Are lab-grown human sperm the real thing?
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Humans
Review: Sex in shades of grey
Books & Arts
Humans
‘Hippy’ monkey is a killer when starved of sex
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Humans
Size doesn’t matter to some women
While western women generally prefer tall males 鈥� the women of Tanzania's Hazda tribe can take them or leave them
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Humans
Monkey ‘stock market’ prone to fluctuations too
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Humans
‘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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Humans
Giant sperm stretch back millions of years
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