Part of a man's DNA. It is passed from father to son, and women don't have it. See 'Some Notes on Archaeology'.
Y Chromosome
Fact of the Day
In 1385, London appointed its first sanitary officer, the serjeant of the Channel, to keep the streets free of rubbish.
Quote of the Day
"Increased means and increased leisure are the two civilisers of man.
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~ Benjamin Disraeli
On This Day
1913 Suffragette Emily Davison stepped in front of king's horse at Epsom, but didn't expect to be killed - she'd bought a ticket home.
1940 The final day of the Dunkirk evacuation (Operation Dynamo). 338,226 British, French and Belgian soldiers were rescued in total.