National Parks-our best idea

It has been said that the national parks are our country's best idea.  Certainly they are something worth celebrating on this 100th anniversary year.  Having lived in countries where there are not parks with such open accessibility, we can certainly say they are a grand heritage.  Now PBS is airing their series by Ken Burns called "The National Parks" celebrating the national parks!  You can catch episodes on your local station (find yours here ) or you can watch them online for a limited time here.