10 things we didn't know before the 33rd week of 2007

1. Uncollected council tax totals £760m.
2. Some otters don't like swimming.
3. The Rubik’s Cube can be done in 26 moves.
4. Crows can use tools.
5. CDs were nearly called mini-racks.
6. CDs have 74 minutes' audio capacity, originally to accommodate Beethoven's 9th Symphony – before that they were just an hour.
7. Attractive people are, on average, less selfish than moderately attractive people.
8. The name Hells Angels was coined by a squadron of World War I fighter pilots.
9. Seven double espressos can land you in hospital, with caffeine intoxication.
10. Left-handed people are called sinistral.

(Source: BBC)