Forming Gems and Fighting the Freeze

31 October 2008
Presented by Chris Smith


How are gemstones formed? Why do we get brain freeze when eating Ice Cream? What is Renault's disease? We find out in this week's Ask the Naked Scientists, as well as discover how helicopters hover in one place, how some people avoided death during the plague, if fireworks& are damaging to our environment and why we get body odour.


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