During a TED interview, Elon Musk provided insight into his three businesses: SpaceX, SolarCity, and Tesla. But he also discussed out future power energy source, one which he believes needs to be solar. “I’m confident that solar will beat everything hands-down, including natural gas. It must, actually. If it doesn’t, we’re in deep trouble,” Musk told interviewer Chris Anderson. [Source: The Verge]