A volcanic formation known as Pele’s hair is produced when air-filled magma is stretched, according to a new study by a team of scientists and glass artists. Most people associate ash and churning lava with volcanic activity, but volcanoes also produce formations that look unnervingly like human ponytails. Known as Pele’s hair, these extremely thin strands of volcanic glass are named for Pele, a female fi... [1429 chars]