*If you thought riding public transit was a gamble, San Francisco’s 14 Mission line just raised the stakes. This Muni bus has become infamous for its surprise “organic décor,” racking up more ...

A bus powered entirely by human and food waste has gone into service in the UK. The Bio-Bus is capable of travelling up to 186 miles with one tank of biomethane gas and runs between Bath city centre ...

What if the solution to our dependence on oil was right under our, uh, noses all this time? It doesn't get much greener than this: City officials in Oslo, Norway have created a biofuel made from fecal ...