Charles Van Rees joins Bob to discuss something we can take for granted. Water is an amazing substance and Charles has some insights as to why it is essential to all life on earth. This is part one of a three part series on water and its importance to all living things on earth. Related episodes: So You Want to Be a Naturalist, Sycamores Can Be Huge Trees Our sources for this episode include: Water: The Science of Nature's Most Important Nutrient by Len Kravitz Vandas et al., 2002: Water and the Environment