Elon Musk is a 39-year-old engineer and serial entrepreneur. At 28, he co-founded the popular e-payment company Paypal. He then went on to start SpaceX, the first private company to launch a rocket into space, and Tesla Motors (no doubt named after inventor Nikola Tesla), which builds electric cars.
Musk sounds like one hell of a rocket scientist. Do listen to the CNN interview with Elon Musk, where he answers the question, "What three inventions will change the world?". And check my profile on Musk, this inventor rocks. Photo Getty Images