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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.

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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.

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

Find out more (The Telegraph)

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