Past studies said the decision to help depends on things like time pressure, and the number of bystanders. But self-identified humility trumps these other factors.
One in four teens might be at risk of early hearing loss due to too many hours listening - at too high a volume - to music on their iPods and other MP3 devices.
Scientists are finding new medicines via research on sponges and corals. They could make some antibiotic resistant bacteria respond once more to antibiotics.
A scientist says that the human eye evolved to see in color in part to scope out what another person feels by detecting subtle color changes in their skin.