Want to take that green on the road? This lovely art project put a lush garden in a Chicago train car and circled downtown for hours.

China's Zhangjiajie National Park features breathtaking geological formations - seemingly gravity-defying pillars that inspired the floating mountains in Avatar.

Could we one day harness the awesome power of tidal waves with sea-bound platforms? One designer thinks this method could be the answer for clean power.

These 10 cute-as-can-be electric cars and electric car concepts add a fluffy dollop of squeal appeal to your sustainable, pollution-free driving experience.

GPS tracking, text messages, sonograms, unmanned planes and even Hubble Telescope software are all helping researchers save endangered species.

These compact, often self-sufficient structures are easily assembled and disassembled so they can go anywhere you want to be - even remote mountain ridges.

Amber (fossil tree sap) can contain prehistoric insects, crustaceans, frogs and lizards, preserved in exquisite detail and all many millions of years old.