"Keep this great wonder of nature as it now is. Leave it as it is. You cannot improve it." - Teddy Roosevelt to the people of Arizona after seeing the Grand Canyon for the first timeKen Burns' documentary, The National Parks: America's Best Idea, will not air until late September, but most PBS stations will be airing a 30 minute preview on May 24th. In the meantime, the website for the six episode documentary is up and running. Lots of great video, images, interviews, and all that jazz. We're real real excited for this one.