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snapper spawn

Life

Mass of spawning fish make a milky way on a coral reef

When photographer Tony Wu went to Palau to watch red snapper spawn he discovered why so few photos of the spectacle exist

Regulars

Eleanor Bath

Life

Why does semen make female fruit flies more aggressive?

Opinion

Baby born by caesarean section

Health

Boost C-section babies by giving them vaginal bacteria

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

Every man's sperm is fighting an evolutionary civil war – and over the years, it ups the risk of fathering a child with a genetic disorder

Features

Life

Men with smaller testicles make better dads

News

Technology

The radioactive legacy of the search for plutopia

Books & Arts

Health

Can castration really prolong a man's life?

News

Earth

Zoologger: First animal with ovaries on the outside

News