The eruption of Mount Vesuvius 2,000 years ago turned a victim’s brain tissue into glass. Scientists say they have figured out how this unusual phenomenon occurred.

A young man was lying in his bed when a viciously hot cloud of ash swept down from the erupting Mount Vesuvius and turned his brain to glass almost 2,000 years ago.

The famous eruption of Mount Vesuvius that wiped out Pompeii and Herculaneum created a super-heated ash cloud that turned one unlucky man's brain to turn to glass, a new study suggests.