Here I have listed down some of the innovations along with inventor,, which have been useful to mankind..
There are many more. So my list is incomplete !!!!
1. Thomas Alwa Edison , Light bulb
2. Nicole Tesla , Alternating current ( AC ) systems
3. Alexander Graham Bell , Telephone
4. Marie Courie , Radioactivity
5. Albert Einstein, Theory of relativity
6. Johannes Gutenberg , Printing machine
7. James Watt , Steam Engine
8. Wright Brothers , Aeroplane
9. Galileo Galilee , Heliocentric solar system
10. Alexander Fleming, Penicillin
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