A closer look
Next time someone asks if you run on coffee, London’s buses might beat you to the punch—because some literally do. Engineers discovered that discarded coffee grounds can be spun into biofuel oil, enough to power iconic red double-deckers through the city streets. It’s as if your morning latte, after fueling your brain, takes a second life helping a bus power its gears. This twist turns waste into movement, making each café’s leftovers part of a giant circular story. Suddenly, the aroma of espresso isn’t just found in cups but in the very engines carrying the city forward.
