10 things we didn't know last week

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1. The "perfect Aryan child" in Nazi propaganda posters was Jewish.

Find out more (Washington Post)

2. The best way to prevent your headphones from tangling in your bag is to join the ends together.

Find out more (The Times)

3. Chris Packham writes a letter every year to the makers of I'm a Celebrity... Get Me Out of Here! to complain about the show's treatment of animals.

Find out more (Guardian)

4. Yorkshire and Humberside are as red-headed as Ireland.

Find out more (Daily Mail)

5. Eating an apple a day can boost sexual pleasure in healthy women.

Find out more (Daily Telegraph)

6. The Yo mobile app is used to alert Israelis about rocket attacks.

Find out more (Independent)

7. Historically, the perfect age to be a player in the World Cup is 27.5 - it's also the mean age of the 32 teams that played in the group matches at Brazil 2014.

Find out more

8. Smell receptors are found in the heart, liver and gut, and aid the healing process.

Find out more (New Scientist)

9. Guantanamo detainees smuggle food into the recreation yard to feed Princess, the camp's cat.

Find out more (The Times)

10. One in five US high school seniors has smoked hookah, and most of them are under the impression it is healthy.

Find out more (Washington Post)

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