10 things we didn't know last week

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1. You can get pregnant while already being pregnant.

Find out more (Refinery 29)

2. Someone has a job making wooden tanks for Islamic State.

Find out more (Reuters)

3. Three British and three Dutch World War Two ships have vanished from the bottom of the Java Sea.

Find out more

4. British ambassadors still send telegrams.

Find out more (Times)

5. Dating app Tinder has 37 options for defining gender, beyond male or female.

Find out more (Vice)

6. There is an airline class lower than economy.

Find out more (Quartz)

7. At least one million tonnes of chemical weapons have been dumped in the sea.

Find out more (Hakai)

8. Every dog alive today is descended from ancient Asian roots.

Find out more (Discover)

9. There are 1,800 chemical components in a cup of coffee.

Find out more

10. A pack of Smarties is more likely to be missing red than any other colour.

Find out more (Mental Floss)

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