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	We kept Friesian cows for about fifteen years. Sometimes they got sunburnt but only on the white patches. Why? Ian in Northampton
	White hair is basically transparent whereas a black hair is dark. The light will go straight through the white hair and straight through to the skin. However in black hair it will be absorbed by the hair.
	May 2006

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Listen to this as part of the show: 28th May 2006 - Naked Science Q&A and the Science of Happiness
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