10 things we didn't know last week
16:43 UK time, Friday, 4 March 2011
1. Kenya's MPs aren't allowed to wear bling.
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2. People with full bladders make better decisions.
3. Killer whales have a "stealth mode".
4. Finnish men have have some of the highest sperm counts in the world.
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5. The ransom paid to release Richard the Lionheart, captured in 1192 on his way back from fighting the Crusades, was the equivalent of about £2bn in today's money.
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6. Parents exaggerate the joy of having children to justify the sky-high cost of bringing them up.
7. The Mr Men and Little Miss series have sold more than 100 million copies worldwide.
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8. There are 16 amateur superheroes patrolling UK streets at night.
9. The average time Britons have their first alcoholic drink in the evening is 7.11pm.
10. Britain's biggest bird of prey is the white-tailed (or sea) eagle, which has a wingspan of eight feet.
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