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A spotted snow skink

Life

Lizard can switch from female to male before birth, but not vice versa

Some offspring of the spotted snow skink, a lizard found in Tasmania, are born anatomically male but are genetically female

News

Research reveals the sex secrets of amphibian singing choruses

Video

Acoustic camera reveals how calls from male frogs attract females

Video

An older couple kissing

Health

A third of people aged over 70 are sexually active, survey reveals

News

Contraceptive pills

Health

Male contraceptive pill is safe and effective in tests in mice

News

Sorry Darwin, but it turns out promiscuity benefits females too

Life

Sorry Darwin, but it turns out promiscuity benefits females too

Comment

Bottlenose dolphins swim off the coast of South Carolina

Life

What dolphins reveal about the evolution of the clitoris

News

Close-up of gay couple hands on table

Health

Sexual desire may be triggered by gentle touch sensors in your skin

News

honeybee

Life

A single honeybee has cloned itself hundreds of millions of times

News

chromosomes

Life

A species of yeast produces near-identical clones when it has sex

News

lizard

Life

Heat overrides genes to make bearded dragon embryos change sex

Some Australian lizards that begin developing as males will hatch as females if the egg is particularly warm, because the heat triggers genes that override their sex chromosomes

News

Life

Male Brazilian frog stays loyal to two females during breeding season

News

Health

Human eggs release chemicals that attract some sperm more than others

News

Video

The mathematician’s guide to dating and finding the perfect partner

Video

Life

Why climate change is creating more female sea turtles and crocodiles

Features