10 things we didn't know last week
17:32 UK time, Friday, 18 March 2011
Snippets from the week's news, sliced, diced and processed for your convenience.
1. Monkeys recognise faces.
2. Hearing aids can work on teeth.
More details
3. St Patrick's Day is a national holiday in Montserrat.
More details
4. The last British tsunami to register a verified height was in 1975, and it reached 6cm (2.3in).
5. Sharks go to the cleaners.
6. Picking daffodils could count as criminal damage.
7. Elephants respect their elders.
8. Birds crash into wind turbines because they aren't looking where they're going.
9. Just 3% of UK cash machines dispense £5 notes.
More details
10. Whales are scared of sonar.
Seen 10 things? .
The 
