Elon Musk shares the number of gigafactories required to sustain global energy needs and the key to powering the entire planet efficiently.
Elon Musk doesn't need an introduction. But we're going to give him one anyway. Probably because we never get tired of describing him. One of the greatest minds in the world right now, Musk is known for his enormous innovations in the field of electrically powered vehicles in Tesla Motors and his work in SpaceX. He's…