10 things we didn't know last week

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1. Friends actor Matthew Perry once beat up Canadian PM Justin Trudeau.

Find out more (Huffington Post)

2. Nelly Furtado has been working in a library.

Find out more (Refinery 29)

3. The "five-second rule" about eating food dropped on the floor is true.

Find out more (The Independent)

4. Uber has produced an 18-part podcast, warning drivers about the dangers of joining a union.

Find out more (Quartz)

5. Spiders are the top global predator.

Find out more

6. Jean-Marie Le Pen introduced the duffle coat to France.

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7. B vitamins may have a protective effect against air pollution.

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8. The polka-dot tree frog is naturally fluorescent.

Find out more (New Scientist)

9. RuPaul is married.

Find out more

10. Having children adds up to two years to life.

Find out more (The Telegraph)

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