10 things we didn't know last week
16:50 UK time, Friday, 20 January 2012
Snippets from the week's news, sliced, diced and processed for your convenience.
1. A Sudoku with fewer than 17 numbers filled in will have more than one possible solution.
More details (New Scientist)
2. Skydiving can help you earn a GCSE qualification.
More details
3. A horse fly is named after Beyonce.
More details (Daily Telegraph)
4. State workers in South Carolina answer the phone with, "It's a great day in South Carolina."
More details (New York Times)
5. Snakes know when their prey's heart stops beating.
More details
6. The average US share holding lasts 22 seconds.
More details (Daily Telegraph)
7. Sound travels five times faster through water than through air.
More details
8. Michelle Obama has a pair of $515 (£332) trainers.
More details (The Guardian)
9. Beer brewed 75 years ago can still be drinkable.
More details (Small World News)
10. The government of Iraq considers the buttocks from a toppled statue of Saddam Hussein part of its national antiquity.
More details (Hereford Times)
The 
