Greatest engineering achievements of 20th century by National Academy of Engineering: 1. Electrification 2. Automobile 3. Airplane 4. Water supply 5. Electronics 6. Radio and Television 7. Mechanization of agriculture 8. Computers 9. The telephone system 10. AC and Refrigeration 11. Highways 12. Spacecraft 13. The Internet 14. Imaging 15. Household appliances 16. Health technologies 17. Petroleum and Petrochemical 18. Lasers and Fiber-optics 19. Nuclear technologies 20. High performance materials
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