Sex, lice and videotape

A few years ago, Scott Villa of Emory University had a problem. Then a graduate student at the University of Utah, he was stumped with an issue never addressed in school: How does one film lice having sex?

Study reveals reason hellbenders are disappearing

The gigantic, slimy salamanders known as hellbenders, once the apex predators of many freshwater streams, have been in decline for decades, their population constantly shrinking. No one knew why. William Hopkins, professor ...

Algorithm explains how ants create and repair trail networks

Imagine you're a member of the Cephalotes goniodontus species, an arboreal ant with a Darth Vader-like head that has inspired humans to call you "turtle ants." You're moving along a branch of the tangled tree canopy in Jalisco, ...

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