10 things we didn't know last week

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1. The world's favourite colour is blue.

Find out more (YouGov)

2. Micro pigs are offered to stressed students at the University of Exeter to help ease their exam fears.

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3. To quit smoking, penalties work better than reward incentives.

Find out more (MedCity News)

4. Radiohead's Thom Yorke appears on the front of an Iranian self-help book about marital and sex problems.

Find out more (Mirror)

5. A drugs test can detect cocaine use from a fingerprint.

Find out more (Daily Mail)

6. The strength of your handshake could predict the risk of a future heart attack or stroke, and is a stronger indicator of death than checking blood pressure.

Find out more (Telegraph)

7. The UK has more lesbian, gay or bisexual MPs than anywhere in the world.

Find out more (Time)

8. Ants use their powerful jaws to catapult themselves out of "death traps".

Find out more (Wired)

9. Endangered Andean frogs are being made into "smoothies" in Peru as a supposed natural Viagra and cure for illnesses.

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10. Stone Age mourners marked their respect by placing flowers on graves.

Find out more (Telegraph)

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