glass brain Vesuvius
The pea-sized brain was found in the skull of a 20-year-old man killed in the volcanic eruption.
www.bbc.co.uk
'The team used imaging with x-rays and electron microscopy to conclude that the brain must have been heated to at least 510C before cooling rapidly.
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I don't see the skull cooling rapidly after being buried under scolding ash. Anyone who's started a campfire the morning after, while the ashes are still hot will raise an eyebrow to this. Yes, there are bits of charcoal in a campfire but if your head reaches the 510C stated, I'd assume the bone acts as the charcoal, especially under that much ash.
I call BS and, yes, I'm an expert.