What do you think is the best invention/discovery of the world.
How that invention/discovery is helping humanity ??
One example is Wheel/Tyre that made travel very easy.
I think electricity is the best human invention. It's the most useful invention for generations. Internet. computers, telephones and mobile gadgets won't work without it. It is necessary for the inventions these days to work. Let's admit that it'll be hard for us to live life without electricity. It is the main source of these day's technology.