10 things we didn't know last week
15:27 UK time, Friday, 11 March 2011
1. Chickens feel empathy.
More details (Daily Telegraph)
2. Elephants are good at teamwork.
More details
3. The lifespan of the average British person increases by five hours a day.
More details (Guardian)
4. About 40% of skyscrapers due to be completed in the next six years will be in China.
More details (The Economist)
5. Half of all Pakistani children cannot read a sentence.
More details
6. Tigers kill lions.
More details
7. Leeds has more councillors over the age of 80 than under the age of 35.
More details (Institute for Government)
8. Car use is falling.
More details
9. When potatoes were first introduced to Britain, they were used to make desserts.
More details
10. A soldier's starting salary is nearly £8,000 less than a police officer's.
More details
Seen 10 things? Send us a picture to use next week. Thanks to an anonymous reader for this week's photograph of 10 lunch items.
The 
