ANCIENT RING A new study finds that Neandertals built structures out of stalagmites. Here, a researcher takes measurements of a circular arrangement of stalagmites created in a French cave around 176,500 years ago.
Women exercise for fun and compete in sports, but when it comes to exercise science, men seem to matter most.
BACK AT YA Babies start sticking their tongues out shortly after birth. Debate about whether newborns copy such behavior from adults continues nearly 40 years after infant imitation research began.