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How many of the 20th century's greatest engineering achievements will you use today? A car? Computer? Telephone? Explore our list of the top 20 achievements, and learn how engineering shaped a century and changed the world. Click here for the standard version of this page.

1. Electrification 2. Automobile 3. Airplane 4. Water Supply and Distribution 5. Electronics 6. Radio and Television 7. Agricultural Mechanization 8. Computers 9. Telephone 10. Air Conditioning and Refrigeration

11. Highways 12. Spacecraft 13. Internet 14. Imaging 15. Household Appliances 16. Health Technologies 17. Petroleum and Petrochemical Technologies 18. Laser and Fiber Optics 19. Nuclear Technologies 20. High-performance Materials