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reproduction

Eleanor Bath

Life

Why does semen make female fruit flies more aggressive?

Molecules smuggled in alongside sperm can have big effects on female fruit flies' behaviour, says evolutionary biologist Eleanor Bath

Opinion

Baby born by caesarean section

Health

Boost C-section babies by giving them vaginal bacteria

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Howler monkeys have to choose between big balls and big bawls

Life

Howler monkeys have to choose between big balls and big bawls

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Why did sex evolve? Blame an ancient hook-up

Life

Why did sex evolve? Blame an ancient hook-up

Opinion

Does parenthood really make us happier?

Humans

Does parenthood really make us happier?

Features

Semen has controlling power over female genes and behaviour

Life

Semen has controlling power over female genes and behaviour

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Mice evolve better, not bigger, balls in sperm race

Life

Mice evolve better, not bigger, balls in sperm race

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Infanticide drives female promiscuity and big balls

Life

Infanticide drives female promiscuity and big balls

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Testicular time bomb: Older dads' mutant sperm

Health

Testicular time bomb: Older dads' mutant sperm

Features

New Scientist Default Image

Life

Men with smaller testicles make better dads

A trade-off between investments in mating and parenting may explain why fathers who are more involved with their kids have smaller testicles

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Technology

The radioactive legacy of the search for plutopia

Books & Arts

Health

Can castration really prolong a man's life?

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Earth

Zoologger: First animal with ovaries on the outside

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Health

First viable sperm cells grown from scratch

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