"Taking one of these fragments, it had a black appearance and shiny surfaces quite similar to obsidian, a natural glass of volcanic origin - black and shiny, whose formation is due to the very rapid ...

Fragments from the brain of a man killed by the Mount Vesuvius eruption in the year 79 are smooth and shiny but still contain visible neurons. They look like small pieces of obsidian, smooth and ...

A man, thought to be the custodian of a religious group, was believed to be in his bed asleep, when a super-hot ash cloud hit ...

"Taking one of these fragments, it had a black appearance and shiny surfaces quite similar to obsidian, a natural glass of volcanic origin - black and shiny, whose formation is due to the very ...

"Taking one of these fragments, it had a black appearance and shiny surfaces quite similar to obsidian, a natural glass of volcanic origin - black and shiny, whose formation is due to the very ...