You've learned the danger the sugar maple is in – and of course, the economic danger that also poses in New England. Share your favorite fall foliage story, or let us know – are you ready for naked pancakes?

You've read about the problems the polar bear is facing – and the implications its disappearance will have on the Arctic ecosystem. Now, tell us what you think: Can we save the polar bear?

As EDF's National Climate Campaign Director Steve Cochran points out, last week's passage of the Waxman-Markey American Clean Energy and Security Act was a huge victory and sets the stage for action in the full House and Senate this year.

The United States transportation system is at a fundamental crossroads. While car travel is in an unprecedented decline, transit ridership has increased dramatically, even remaining strong as gas prices dropped back down. But diminishing tax revenues are forcing transit systems to make cuts and layoffs.

The U.S. is now poised for a large-scale investment in its transportation infrastructure, but questions remain about how those funds should be spent. We need state and local officials to think creatively about new forms of transportation that match the increasing demand for transit while also addressing national priorities on energy, the economy, and – most importantly – the environment.

EDF created our transit report to help guide this transition. Follow this link to watch a video summary of the report and view case studies that exemplify what the future of transit should be. See if your state made the list! If we missed an innovative project near you let us know by commenting below and/or emailing us at transit@edf.org.  Then, check out our transit blog to learn more.  For instance, could innovative transit help boost real estate development?

As we gear up for an intense month of global warming action in Washington, we pause to honor Earth Day with this special video message, featuring several of our online activists wearing their favorite "Cap Carbon" hats.

Happy Earth Day, everyone!

Today, EDF has released our Innovations Review 2009 report highlighting innovative businesses that are making green by going green.

Check out our report, and let us know what you think by commenting below.

In an historic step, U.S. Environmental Protection Agency (EPA) Administrator Lisa Jackson today formally determined that global warming pollution "endangers" the nation's human health and well-being.

Today's decision reflects the first step under the federal Clean Air Act to begin establishing national emission standards for large global warming emitters but does not contain such emission limits.

It is anticipated that EPA will finalize the "endangerment" determination while it begins developing national emission standards for new motor vehicles and new coal-fired power plants, the nation's two largest sources of global warming pollution.

What are your reactions? Share your comments below.

We've invited you to show us your carbon cap by picking your favorite hat and sending us a "Cap Carbon" picture.

Check out what we've gotten so far, and comment below to let us know what you think makes the best picture.  Is it the funniest hat? The best slogan?

And don't forget to upload a picture of your own!

Check out this "The More You Know" video featuring NBC stars talking about how to conserve energy. There's a list of tips at the bottom – think they missed anything? Add more below, or let us know about other environmental videos you love!

What would the world look like without lights? For one hour, we'll have the chance to find out.

Switch off your lights this Saturday, March 28th, from 8:30 – 9:30 pm, and become part of a global movement against climate change.

EDF is proud to join tens of millions of people around the world who are taking part in Earth Hour — a global event led by the World Wildlife Fund.

Check out the video below to see how powerful just turning off your lights can be. Then, comment to let us know if you'll be participating!

If you need more information, please visit the Earth Hour site.