"Century Innovations"

20th Century Innovation Topics:

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/refrigeration 
11. Interstate highways 
12. Space flight 
13. Internet 
14. Imaging 
15. Household appliances 
16. Health technologies 
17. Petrochemical technology 
18. Laser and fiber optics 
19. Nuclear technologies 
20. High-performance materials

21st Century Innovation Topics: 

1. Energy conservation 
2. Resource protection 
3. Food and water production and distribution 
4. Waste management 
5. Education and learning 
6. Medicine and prolonging life 
7. Security and counter-terrorism 
8. New technology 
9. Genetics and cloning 
10. Global communication 
11. Traffic and population logistics 
12. Knowledge sharing 
13. Integrated electronic environment 
14. Globalization 
15. AI, interfaces and robotics 
16. Weather prediction and control 
17. Sustainable development 
18. Entertainment 
19. Space exploration 
20. "Virtualization" and VR 
21. Preservation of history 
22. Preservation of species