Dr. Ellen Heinitz, ND (Grants Pass, OR), naturopathic physician, discusses menopause options. Second guest, David Elkowitz (Big Bend National Park, Texas), Chief of Interpretation, discusses what is sometimes considered three parks in one, Big Bend's mountain, desert and river environments - an hour's drive can take you from the banks of the Rio Grande to a mountain basin nearly a mile high (Part 1). For additional information, please visit www.nps.gov/bibe.