Ten inventions that changed the world, according to the London Science Museum:

...curators select[ed] the 10 objects in its collection that had made the biggest mark on history. These then went to a public vote to find the most important invention of past centuries.
1. X-ray
2. Penicilin
3. DNA double helix
4. Apollo 10 capsule
5. V2 rocket engine
6. Stephenson's Rocket
7. Pilot ACE computer
8. The atmospheric engine
9. Model T Ford
10. The electric telegraph

tags: invention, innovation,  greatest