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Henry Kettlewell
- Favourite Briton.

Born in Howden, East Yorkshire
Born on 24th of February 1907
Died on 11th of May 1979

Kettlewell is best-known for his work on a species of moth – the pepper moth – which he showed had adapted in industrial areas to suit its environment, those versions of it being darker than their rural counterparts, a concrete and effectively up-to-the-minute example of natural selection in action.

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First Traffic Signals in Britain - 1868, Edward VIII abdicates - 1936
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