To turn human waste into a usable fuel, Firefly uses a method called hydrothermal liquefaction, which is good for wet waste. By combining high pressure and heat, it converts the sewage into ...

Cool, compact and creative, the ‘Windy City of Africa’ is a place of two halves, where a centuries-old medina (old town) full of scented spice and chattering street sellers sits cheek by jowl with the ...

In a world of cookie-cutter chain restaurants, The Airplane Restaurant stands out like a Boeing among paper planes. It’s ...

You’ve just discovered The Airplane Restaurant, one of Colorado’s most unique dining experiences. This isn’t your typical ...