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.
Pottery artifacts like this funnel from a Yangshao culture site called Mijiaya in northern China show evidence of ancient beer brewing activities.
RETURN TRIPPER DNA from a woman who lived in what’s now Romania around 35,000 years ago indicates that Stone Age humans migrated to North Africa from West Asia. The ancient woman’s skull is shown here.