The universe is an astonishingly secretive place. Mysterious substances known as dark matter and dark energy account for some 95 percent of it. Despite huge effort to find out what they are, we simply don’t know. We know dark matter exists because of the gravitational pull of galaxy clusters – the matter we can see in…

Elon Musk – CEO of Tesla Motors – has just revealed the second part of his master plan for the company. And it’s a doozy. Not content with producing sleek electric cars (which to be fair, was only ever a stepping stone to greater things), Musk wants to fundamentally change how we live our lives. But…