The sausage, the porcupine and the agreeable Mrs. G: Highlights from the pioneers of human sexual response

Dating the penis-camera: Can a woman find happiness with a machine?

The princess and her pea: The woman who moved her clitoris, and other ruminations on intercourse orgasms

The upsuck chronicles: Does orgasm boost fertility, and what do pigs know about it?

What's going on in there?: The diverting world of coital imaging

The Taiwanese fix and the penile pricking ring: Creative approaches to impotence

The testicle pushers: If two are good, would three be better?

Re-member me: Transplants, implants, and other penises of last resort

The lady's boner: Is the clitoris a tiny penis?

The prescription-strength vibrator: Masturbating for health

The immaculate orgasm: Who needs genitals?

Mind over vagina: Women are complicated

What would Allah say?: The strange, brave career of Ahmed Shafik

Monkey do: The secret sway of hormones

"Persons studies in pairs": The lab that uncovered great sex.