7 things I didn't know last month

1. Trafalgar square is exactly 1 hectare
2. What all the flags mean in Formula 1
3. How to iron shirt sleeves properly
4. Why the Isle of Mann's flag has 3 legs
5. The field vole outnumbers humans in the British Isles
6. How to make authentic fresh tagliatelle
7. Woodlice give birth to live young