Can humans survive without the sun? Apparently, they can, in fact, they already did. The idea of living completely underground seems like a compelling Hollywood narrative, but for others, subterranean ...

Underground cities sound like fantasy until the stairs actually tilt downward and daylight slips away behind concrete and stone. Across the world, people have carved homes, chapels, tunnels, and ...

Turkey has long been defined by its ability to connect worlds. In Istanbul, that connection plays out between continents. But deeper inside the country and along its southwestern coast, that bridge ...

It’s lunch hour on a wintry Wednesday afternoon and the streets of Toronto’s Financial District feel eerily abandoned. Snow flurries are blowing at an angle, the sky is a leaden grey, and visibility ...