The hum of refrigerators is so constant in our daily lives that we barely notice it. Yet that background buzz is the ...

Or could they find an alternative? To build a modern civilization, aliens would likely need to use a source of energy that's just as abundant as fossil fuels, said Lewis Dartnell, an ...

This is his story.) Far beyond the fast-paced rhythms of modern life there is another reality, older perhaps than the first recorded civilizations. It is a way of seeing the world that is as old ...