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Archaeology

Ancient Clovis people may have taken tool cues from earlier Americans

Ancient Americans’ spearpoints may have heralded later Clovis weapons.

Tech

A new palm-sized drone is mini, but mighty

Unlike other small drones, this flying robot can tote objects up to 40 times its own weight.

Life

Why some people may be more susceptible to deadly C. difficile infections

Proline, a type of amino acid, increases when gut microbe mixes are disturbed, giving this pathogen a ready food source.

Neuroscience

Messing with fruit flies’ gut bacteria turns them into speed walkers

Without the right gut microbes, fruit flies walk faster and take shorter rests, results that highlight a new connection between the gut and brain.