Why Bother?
Sex seems like an unnecessarily complicated means of reproducing. So how did it ever get started? And why did it catch on?
by Joann C. Gutin
Turning a Man
To their own horror and that of their parents, some babies born with male genes end up with female parts.
Sperm Tales
Though dumb, ugly, and uncoordinated, sperm manage to get the job done.
What Would Life Be Like Without Sex?
What Would Life Be Like Without Sex?
Evolution of the Big O
Are orgasms function or fun? Inquiring biologists want to know.
Sex and the Single Hermaphrodite
If you were a slug and could choose your own sex, which would you pick? Are you sure?
Growing Up in a Hurry
The onset of puberty may be an individual decision.
What's Love Got to Do With It
Sex among our closest relatives is a rather open affair.
The Aggressive Egg
When it comes to describing fertilization, biologists have got it all wrong. The egg is no passive lady-in-waiting.