Sex

Sex and sexuality is about more than just two people, a bed, and a few aphrodisiacs. Scientists study why humans have sexual intercourse (it is good for you and good for the species) and how sex is driven by evolution, genes, emotions and more. There is also much to learn about the differing roles of men and women in the whole mating game. Yes, there's lots of science to explore. Not that an aphrodisiac isn't more fun.
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Animal Sex: How Polar Bears Do It
Polar bear couple cuddling on drift ice in Arctic Svalbard
March 31st, 2015
Polar bear sex involves long-distance tracking, fierce battles and lengthy copulation.
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The Link Between Sex and Prostate Cancer (Op-Ed)
beach, romantic couple, older adults
November 21st, 2014
New evidence supports the theory that sexual activity lowers prostate cancer risk.
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How Sex Organs Get Their Start
Python embryo
November 5th, 2014
New research shows how external genitals arose from very different starting places for reptiles and mammals.
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Unattractive Men Look Better to Women on the Pill
A woman and man talk over coffee.
November 17th, 2014
Changes in hormonal contraceptive use during a marriage could affect a woman's satisfaction, according to a new study that followed married couples for months to years.
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Animal Sex: How Snakes Do It
a garter snake matinb ball
October 27th, 2014
Snake sex involves mating balls, battles similar to arm-wrestling and, sometimes, asexual reproduction.
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Why Is Symmetry So Sexy? It Has Nothing to Do with Health
A woman's face, in close up
August 12th, 2014
People overwhelmingly prefer symmetrical faces to asymmetrical ones, leading to the hypothesis that symmetry is a sign of health. However, new research suggests that health and facial symmetry aren't linked at all.
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Animal Sex: How Dung Beetles Do It
Dung Beetles
November 30th, 2014
Dung beetle sex involves short breeding periods, intense competition and, of course, poo.
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Animal Sex: How Flamingos Do It
A pair of bright pink flamingos.
November 7th, 2014
Flaming sex involves make-up, elaborate group dances and seasonal monogamy.
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Animal Sex: How Tree Frogs Do it
A pair of red-eyed tree frogs (<em>Agalychnis callidryas</em>) mating in the wild.
October 16th, 2014
Not unlike humans, male tree frogs call on females to begin the mating game, and females prefer long calls.
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