A sample of organic glass found inside the skull of a man from HerculaneumPier Paolo PetroneThe eruption of Mount Vesuvius around 2000 years ago caused one mans brain to explode and turned the fragments to glass. The discovery is the only known instance of soft tissue turning to glass and sheds new light on how eruptions kill and how we might protect people.The volcanic disaster struck in AD 79, burying the cities of Pompeii, Herculaneum and Stabiae in thick layers of ash that eventually solidified. At least 1500 bodies and thousands of ancient papyrus scrolls have