Large testicles are linked to infidelity

There is a clear correlation between the size of the testicles of male primates and the proneness to infidelity of females. Learn more about sex, sperm and infidelity at the anniversary exhibition Sexus.

Study explains evolution phenomenon that puzzled Darwin

Why do some animals have extravagant, showy ornaments—think elk and deer antlers, peacock feathers and horns on dung beetles—that can be a liability to survival? Charles Darwin couldn't figure it out, but now a Northwestern ...

Cupid's arrow: Research illuminates laws of attraction

We've heard the clichés: "It was love at first sight," "It's inner beauty that truly matters," and "Opposites attract." But what's really at work in selecting a romantic or sexual partner?

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