Mississippi family says they heard no freight train before a tornado destroyed their home while they were in it.
Transforming the brain tissue to glass would have required an extremely hot and fast-moving ash cloud, lab experiments suggest.
Power said sheet rock fell on her and said that probably protected her from flying glass, but she doesn't remember ... Mickey found himself buried under sheet rock and other debris.
A rare sequence of heating and cooling triggered the chain of chemical reactions that turn organic material into glass.
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