Top 20 achivements of 20th century

Following are the top 20 achivements of 20th century, that changed the world.

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[DOUBLEPOST=1359257299][/DOUBLEPOST]
The word 'art' is derived from the Latin for skill

Ada Lovelace Who wrote the world's first computer program.

Chess is originated from India.

Endocrine system systems controls hormones.

Abraham Lincoln the US president was shot 5 days after the end of the American Civil War.

Polo has periods of play called 'chukkas'.

Britannica encyclopedia was first published in 1768.

The word 'science' comes from the Greek for to know?

The language with the most native speakers is Mandarin Chinese.

carburettor mixes air and petrol (gas) for the internal combustion engine.