A mysterious "snake goddess" painted on terracotta and discovered in Athens may actually be Demeter, the Greek goddess of the harvest. Once linked to the worship of the dead, the goddess is flanked by two snakes on a slab of terracotta about the size of a piece of notebook paper. She has her hands up above her head, which has given her the nickname "the touchdown goddess"... This unusual piece of art was found amid a jumble of gravel and other terracotta fragments in 1932 in what was once the Athenian agora, or public square. The catch, however, is that...