These discoveries radically change our understanding of the Earth's first rainforests. We used to think these were stable ecosystems, unchanged for tens of millions of years. Now we know they were incredibly dynamic, constantly buffeted by climate change.

Below are the top ten most popular green business nominations. See what green consumers are saying about the businesses, check out their Web sites, and then vote for your favorite before October 8.

The oldest and largest trees within California's world famous Yosemite National Park are disappearing. Climate change appears to be a major cause of the loss. The revelation comes from an analysis of data collected over 60 years by forest ecologists.

We thought we were on the right path to have clean, renewable energy play the lead role in Colorado's energy future. But now, our neighbors in Kansas just struck a backroom deal to build a new, dirty coal plant -- and Tri-state, Colorado's second

She stuck it in, under the gravel of the beach at Sleepy Bay, her village's fishing ground. Gail's hand came up dripping with black, sickening goo. It could make you vomit. Oil from the Exxon Valdez.

We have until 19 March 2009 to save this froest from being logged - find out how you can help save it!!

The top 20 biggest, most inspiring, most efficient, most awesome environmental triumphs of 2008.

Chinese are big fans of gardens.Their gardens are amazing places to find peace and relaxation. It's a great place to clear your minds and also you can see beautiful sculptures.

Oct. 11: Deforestation is often so vast that it's hard to appreciate from the ground. As NBC's Anne Thompson reports, a popular Web site is being used to convey the scope of the problem. (Nightly News)

We can help break our addiction to fossil fuels like coal and oil by switching to renewable energy. In fact, with upgrades to our electricity grid, the United States could meet all of its power needs with renewable energy and support a significant portion