Two wheels good, three wheels better? Apply the power of three and put a new spin on people-powered peddling with these 16 amazing tricycle concepts!

The BioLite CampStove is a pretty green way to cook when camping, turning twigs and other wood scraps into heat energy that cooks food and powers gadgets.

Bacteria is essential to human health and that of the earth, but did you know it can also clean up radiation & pollution, target tumors and turn waste into fuel?

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.

You may not think that spending your day inside a nuclear power plant cooling tower is a recipe for fun, but Wunderland Kalkar might just change your views.

A light burns eternally in a field in Turkmenistan. The Gates of Hell crater has been on fire continuously since 1971, creating a bizarre tourist attraction.

The ECCO camper concept RV by design firm NAU is a sleek, streamlined, zero-local-emission RV that's more winning than any old (or new) Winnebago.

These smart shades feature modular solar panels that let summer-loving adventurers enjoy the shade while reaping the benefits of the sun all at once.

Street vendors have a greener future to look forward to. The EcoKiosk was designed to make their stalls cleaner, greener and more appealing all-around.

Sick of hunting for a space to park your bike? This brilliant concept utilizes unused vertical urban areas (and some people power) to create plenty of parking.

Both of these ads use the power of fruit batteries to remind us of the natural fuel that fruits (and other whole foods) provide our bodies.

This design for street lights in remote locations would use the power of the wind, along with the strength of bamboo, to light the way on dark beaches.

Idealistic dreams of a cheap, clean, atomic-powered future are fast fading to nightmares as the INES adds one more nuclear accident to its lethal list.

This tiny caravan is half a century old, but it is helping to spread a thoroughly modern message about alternative energy and environmental stewardship.