Hunter-gatherer culture is often seen as survival of the fittest individuals by brains or brawn. Find out how new studies show that the opposite is true. (4:30 min)
Predators decline in numbers before prey animals whenever wild places are developed for human land use. Find out why this is a concern for our global ecosystem. (4:00 min read)
Scientists have finally learned the mass of the tiniest elementary particle, the neutrino. Find out what this means for future studies.