A genetic variant linked to cold sensation and migraine headaches may have helped people survive in northern climates.
New theory views lullabies as a signal to babies that parents are giving all they can.
New research changes our understanding of how humidity influenced the evolution of the human nose.
Police in Ferguson have used an ancient tactic.
Appalachian cave art may explain Mound people's universe.
Doubt over claims that we descended from new species and disagreement about how close a cousin it was.