ANSWERS

1. Marie and Pierre Curie

2. Deepwater Horizon, operated for BP

3. "La Marseillaise"

4. Pasteurisation (the scientist was Louis Pasteur)

5. The Rump Parliament

6. Pierre Trudeau

7. Charlie Duke left the photo. His commander was John Young.

Apollo 16 touched down late on 20 April by US clocks, but it was already 21 April in UTC, so both dates appear in sources.

8. Jacques Cartier

9. Manfred von Richthofen

10. Napoleon III

11. Joan Miró

12. Harold Lloyd, "Safety Last!"

13. Jessica Lange

14. Andy Serkis

15. George Takei

16. The news was dominated by the sinking of the Titanic, five days earlier.

17. Pontiac

18. The Mariel boatlift

19. Danica Patrick

20. Luther Vandross