Biofuels made from corn have serious drawbacks -- land conversion from forest to agriculture creates a huge carbon debt. But any diesel vehicle can be made to run on waste vegetable oil (WVO), a recycled waste product that produces lower emissions.

Rogue -- a perky four-year-old Belgian sheepdog -- sure thinks so! Find out how he's making a difference by finding rare plants and other species in Oregon. Then watch a great video of Rogue in action!

Answer: about 90 minutes -- that's it! Truly a great example of the far-reaching power of social media. Read Beth Kanter's blog for more insights as to how she did it.

If the most dire climate predictions come to pass, the Arctic ice cap will melt entirely, and polar bears could face extinction. So why not pack a few off to Antarctica, where the sea ice will never run out?

It is time, says a University of Toronto biologist, that we began 'to think of humans as part of the natural world', and not separated from nature... nor the future of the planet.

Enemy #1 in my personal battle to be eco is my own forgetfulness.

...when you make your very own "Fail Whale" 3D sculpture. Guaranteed to be at least as sturdy and reliable as Twitter is, if not more so. Awesome!

In one of the most significant conservation sales in U.S. history, The Nature Conservancy and The Trust for Public Land have preserved 320,000 acres of pristine forest in western Montana that provide valuable habitat for species.

The proliferation of voluntary carbon offset programs seems like a great way for individuals to help fight climate change. But do carbon offset programs really work? Learn about five of the key standards for making them more effective.