Beth Battaglino Cahill (Red Bank, NJ), Executive Director with The National Women's Health Resource Center, a non-profit organization, discusses the Dry Eye Hot Spots” fact sheet. Listed are the top 100 U.S. cities with environmental conditions most likely to aggravate dry eye. The rankings are based on data archived by the National Oceanic & Atmospheric Administration's National Climatic Data Center and the Environmental Protection Agency (EPA). For additional information, please visit www.healthywomen.org. Second guest, Bob Fuhrmann (Wyoming), Education Director with Yellowstone National Park, discusses the park's magnificent Mammoth Hot Springs. A system of small fissures carries water upward to create approximately 50 hot springs in the Mammoth Hot Springs area. Several key ingredients combine to create the hot springs terraces: heat, water, limestone, and a rock fracture system (Part 2). For additional information, please visit www.nps.gov/yell.