10 things we didn't know last week
14:52 UK time, Friday, 2 January 2009
Snippets from the week's news, sliced, diced and processed for your convenience.
1. Sharks have weak jaws.
2. Since 1972, 24 "leap seconds" have been added to the world's "time" because of the earth's slowing rotation.
3. Blind children used to be taught to write Braille right to left, so it could be turned over and read left to right.
4. Using both hands to read Braille achieves an average speed of 115 words per minute, compared with 250 words per minute for sighted reading.
5. Gold medal winner Chris Hoy was inspired to cycle by ET.
6. Jatropha plant oil can be used to fuel planes.
7. Dieting impairs your ability fo fight flu.
8. Chinese people spend three times longer online, for leisure, than the average Danish person.
9. Only older mosquitoes pass on dengue.
10. Our facial expressions are hardwired into our brains rather than learned during life.
Seen 10 things? . Thanks to Catherine Spencer for her picture of 10 pigeons in Lancashire.
The 
