Susan Cosier is a senior editor for Audubon, where she covers subjects from politics to tourism. In the Green Guru column, she answers the most vexing questions posed by readers about how to live green in today's climate of environmental responsibility. Susan received her undergraduate degree in environmental science before she entered New York University's prestigious masters program in Science, Health, and Environmental Reporting. Before joining Audubon, she worked as an editor at Plenty, an environmental lifestyle publication. Her work has also appeared in Scientific American MIND, E, the Environmental Magazine, and Wildlife Conservation. Visit her website at susancosier.com.