* Co-author, Redesigning the American Lawn: A Search for Environmental Harmony (Yale Press, 2001)
* Associate Dean and Lecturer in Forest Microbiology, Yale University's School of Forestry and Environmental Studies
* NPR's Doyenne of Dirt
* Conservation Manager, Southern Nevada Water Authority
* Executive Vice President, The Professional Lawn Care Association of America
Your lawn...it's smooth and emerald green. Right after it's been cut it smells like a summer in childhood...and you probably don't think about it much when you run around barefoot...but some ecologists say what you put on it — can can be an environmental hazard. Guest host Melinda Penkava talks with guests about the largest crop in the U.S. — the grass in your yard and it's impact on the environment.