According to scientists, the average human brain weighs about 1.36 kg, which contains about 100 billion neurons. And when you hear the power of this brain, you have to be surprised. According to neuroscientist Dr. Walter, if an electrical brain equal to the human brain were to be made, it would be possible to buy tens of billions of sophisticated computers at present with the money spent on it. And the size of this mechanical brain will be equal to 18, 100- storey buildings, which will need one billion kilowatts of electricity to run.