British scientists have invented a brain-cooling motorcycle helmet called ThermaHelm. It features two chemical packs — built into the helmet’s lining — that trigger upon sudden impact and the resulting “reaction lasts up to 45 minutes, stabilizing the temperature of the brain and improving the crash victim’s chances of survival.” Continue reading

One pack contains water, the other ammonium nitrate. A sudden impact causes the two to mix and trigger a ‘cooling’ reaction.

[via Dailymail]