10 things we didn't know last week

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1. The US National Security Agency used to have a Clown Club for staff members.

Find out more (Slashgear)

2. There is a deep sea snail named after Joe Strummer.

Find out more (The Guardian)

3. Main characters are more likely to die in children's cartoons than in films for adults.

Find out more (BMJ)

4. The origins of Monopoly go back decades earlier than previously thought to the Landlord's Game, patented in 1904 by the feminist Lizzie Magie. It had a square board with nine rectangular spaces on each side between corners labelled "Go to Jail" and "Public Park".

Find out more (Smithsonian)

5. There is more water locked deep within the Earth's crust than previously thought - at about 11 million cubic kilometres it's more than all the world's rivers, swamps and lakes put together.

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6. The Star Wars character Han Solo was partly based on Francis Ford Coppola.

Find out more (New Yorker)

7. The late Liberal Party leader Jeremy Thorpe had a long-running fantasy about marrying Princess Margaret.

Find out more (Daily Telegraph)

8. Christingle started in Germany in 1747 but didn't reach the UK until 1968.

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9. The three escapees whose story was told in the movie Escape From Alcatraz (and who were never found) could have survived if they set off after midnight but before 01:00.

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10. Arctic ground squirrels hasten the release of greenhouse gases.

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