The only eco-friendly source of "base power," that is, power that (unlike solar or wind) is available at a constant rate whenever you need it, is geothermal. This lack of reliability makes green power a hard sell, and the Oak Ridge National Laboratory might have an answer: seawater.

Scotland, being awesome, is putting some serious effort into eventually sourcing 100% of its energy from renewable sources. Seeing as the weather up there is often blustery enough to blow your kilt up around your ears, wind energy seems like a safe enough bet, and the Scots are getting a giant new wind turbine that comes with its own helipad.

Dreaming of a "white Christmas" is so 20th Century. Welcome to the 21st Century, where we think of the holiday season as green — and we don't mean cash. Today, with so many stresses on our environment and the need to be mindful consumers, many people are looking for that special "green" gift that will keep on giving. Never fear — we've scoured the web for the grooviest gifts that embody all kinds of green giving. Whether upcycled products bringing something old back to life, something made from left over materials or something that simply brings a bit of nature back into our increasingly urban lives we think all these gifts are wicked cool.

Dean Kamen, noted brilliant and sometimes crazy inventor, has patented a new design for inflatable wind turbines which can double as illuminated advertising billboards. I guess free wind energy is just not quite good enough.