Worker wasps grow visual brains, queens stay in the dark

A queen in a paperwasp colony largely stays in the dark. The worker wasps, who fly outside to seek food and building materials, see much more of the world around them. A new study indicates that the brain regions involved ...

Sexually naive male mice, fathers respond differently to pups

Sexually naïve male mice respond differently to the chemical signals emitted by newborn pups than males that have mated and lived with pregnant females, according to a study published March 20 in The Journal of Neuroscience. ...

New research exposes humans' early ecological versatility

A recent study by University of Helsinki researchers sheds new light on the ecological adaptability of early humans at the time when they first expanded their range outside Africa, from 2 million to 1 million years ago.

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