10 things we didn't know last week

Beer gut

1. Beer bellies are a myth - alcohol does not target the gut.

Find out more (Time)

2. Birds are suffering from the "harmful misuse" of mobile phone apps that mimic birdsong.

Find out more

3. There's a previously undiscovered sixth layer in the eye's cornea - the Dua layer.

Find out more (Metro)

4. Cats born with two faces are known as Janus cats.

Find out more (Daily Express)

5. Chickens lost their penises because of a gene called Bmp4.

Find out more

6. Until recently the US Navy had a requirement that all official messages be sent in capital letters.

Find out more

7. Men are to blame for the menopause.

Find out more (Daily Mail)

8. A flamingo-like pterosaur used gravel to aid digestion.

Find out more (New Scientist)

9. A protein called myoglobin allows mammals including whales and seals to hold their breath underwater for an hour.

Find out more

10. Venezuelans are using mobile phone apps to locate scarce toilet paper.

Find out more (The Guardian)

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