10 things we didn't know before the 27th week of 2007

1. Piranhas aren't as deadly as you probably think.
2. Tony Blair proposed to Cherie while she was cleaning a loo.
3. Three-quarters of Britons snore.
4. Pollution kills 750,000 people in China every year.
5. Chocolate lowers blood pressure.
6. Yawning keeps you alert.
7. A controlled explosion involves destroying the initiating circuit - usually a mobile phone - and detonator, leaving the main explosive device intact.
8. Noise levels for the young have trebled since the 1980s, as dance clubs have become ubiquitous.
9. Of the 800 Britons registered as living in the Niger Delta, 33 have been kidnapped in the past year.
10. Women are no more talkative than men, but use more personal pronouns - "he", "she" and "I" - while the male of the species talks more about things, so use "a", "an" and "the" more.

(Source: BBC)