The Myth of Badass Sperm
We’ve all been taught that human fertilization is an Olympic-style competition. The truth is that it’s much more like a gigantic lottery.
The Myth of Badass Sperm
Sex
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Secrets of a Brothel Privy
The outhouse of a 19th-century Boston brothel might not be the first place you’d think to look for revealing clues about the past—but maybe it should be.
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When It Comes to Love, Is Three (or More) a Crowd?
Cultures around the world fear unrequited love. One strategy to avoid the pain of rejection might be to spread your love around—but does that work?
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Watching Ancient Hominins Giving Birth
The human birthing process is more difficult than that of any other primate. One researcher is using bones and computers to figure out why—and what to do about it.
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The Moral Code of Chinese Sex Workers
A researcher immersed herself in the "sisterhood" of China’s female sex trade—and came away with an appreciation of its rules of conduct.
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Nature’s Most Creative Copulators
Why have humans taken mammalian sex to a whole new level?