By Benedict Carey 12/6/2010, The New York Times The puzzles look easy, and mostly they are. Given three words — “trip,” “house” and “goal,” for example — find a fourth that will complete a compound word with each. A minute or so of mental trolling (housekeeper, goalkeeper, trip?) is all it usually takes...

By April Nowell Hominin evolution is the result of complex interactions of biology and behavior within particular physical, social, and cultural environments. While evolution takes place at the species level, species are made up of individuals engaging in a social world. Extensive research into topics...