What do cork, coffee cups, lettuce, and excessive travel have in common? They are all areas of personal choice that have an environmental impact, and they are all things we will be discussing with our guest today on Sea Change Radio. Lloyd Alter is a design professor as well as an editor at TreeHugger.com. This week he joins us and expounds on the virtues of cork, a surprisingly sustainable alternative to fossil-fuel-based products for sound-proofing, insulation, home-building, and, of course, bottling wine.