National Academy of Engineering's
Top 20 Engineering Accomplishments
of the Twentieth Century

1) electrification

11) highways

2) automobile

12) spacecraft

3) airplanes

13) Internet

4) water supply and distribution

14) imaging

5) electronics

15) household appliances

6) radio and television

16) health technologies

7) agriculture mechanization

17) petroleum and petrochemical technology

8) computers

18) fiber optics

9) telephone

19) nuclear technology

10) air-conditioning and refrigeration

20) high performance materials