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Baby born by caesarean section

Health

Boost C-section babies by giving them vaginal bacteria

C-section babies swabbed with vaginal fluid have the gut bugs of babies born conventionally, which may reduce asthma and obesity and affect their future health

News

Howler monkeys have to choose between big balls and big bawls

Life

Howler monkeys have to choose between big balls and big bawls

News

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

News

Mice evolve better, not bigger, balls in sperm race

Life

Mice evolve better, not bigger, balls in sperm race

News

Infanticide drives female promiscuity and big balls

Life

Infanticide drives female promiscuity and big balls

News

Testicular time bomb: Older dads' mutant sperm

Health

Testicular time bomb: Older dads' mutant sperm

Features

Life

Men with smaller testicles make better dads

News

Technology

The radioactive legacy of the search for plutopia

Cold war dreams of producing nuclear bombs fuelled shocking radiation experiments by US and Soviet governments, reveals Kate Brown's Plutopia

Books & Arts

Health

Can castration really prolong a man's life?

News

Earth

Zoologger: First animal with ovaries on the outside

News

Health

First viable sperm cells grown from scratch

News

Earth

Polygamy boosts mouse sperm fitness

News