One of Seeger's strongest efforts for Columbia is here enhanced with three unreleased tracks. The focus of an environmental theme gives the quintessential troubadour rare inspiration. The songs create a statement about the beauty of nature and the foibles of petty politics. But the best thing about this work is it's a beautiful record, with fine songs and fine singing, that also makes you want to plant a tree and clean up a filthy river. It appeals to what is best in us, and that's pretty impressive.