10 things we didn't know last week

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A man is splashed with blue paintImage source, Getty Images

1. The world's favourite colour is blue.

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

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

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

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

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.

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

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

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

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

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