Across
- 4. Best seeling book of all time
- 5. Surname of world's richest man
- 7. WBC heavyweight boxing champion
- 9. Bilogical process that sets itself naturally to a 24 hour cycle
- 10. Spirit in blue lagoon
- 11. Animal on Porsche logo
- 12. Finland capital
- 15. Largest waterfall in the world
- 16. President of the US 1987
- 19. Owner of Tesla
- 21. Main source of vitamin C
- 22. Who was I in the movie 'I am a legend'
Down
- 1. First name of the English monarch ruling in 880
- 2. In which month did Japan bomb Pearl Harbour
- 3. Football team based in Birmingham
- 6. Piece in chess worth five points
- 8. Korean tech company
- 13. Country with most Fifa world cups
- 14. Dubiousness
- 17. Largest county in England
- 18. Geiger counter measures
- 20. Band that sang 'live forever'