The Greatest Achievements In The History Of Humankind, Ranked
25. Telephone
24. Telegraph
23. Image capture/film recording
22. Sound recording
21. Aspirin
20. The combined oral contraceptive pill
19. Air travel
18. Water and sewerage systems
17. Refrigeration
16. Rail travel
15. Invention of the printing press
14. Invention of the internal combustion engine
13. Telescope
12. Compass
11. Sea travel
10. Discovery of penicillin
9. Sterilization/pasteurization
8. Vaccination
7. Harnessing of electricity
6. Development of the written word
5. Development of agriculture
4. Creation of the wheel
3. Hamilton
2. Development of the spoken word
1. Control of fire