Playlist

Sex ed for adults

At this point in life, you're well aware of where babies come from. These talks on the complexities of healthy sexuality will teach you a few other tricks.

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Diane Kelly

What we didn't know about penis anatomy

Al Vernacchio

Sex needs a new metaphor. Here's one ...

Elizabeth Pisani

Sex, drugs and HIV -- let's get rational

Esther Perel

The secret to desire in a long-term relationship

Marlene Zuk

What we learn from insects' sex lives

Aspen Baker

A better way to talk about abortion

Mechai Viravaidya

How Mr. Condom made Thailand a better place for life and love