Dr. Mary E. Power is a Professor in the Department of Integrative Biology at the University of California, Berkeley as well as Faculty Manager at the Angelo Coast Range Reserve and Director of the California Biodiversity Center. Mary is also a contributing scientist in a new documentary film called The Serengeti Rules. Over the course of her career, Mary has studied the ecosystems of four different rivers. Her work to understand the food webs in those rivers has involved observation and taking field notes, mapping and quantitative observations to identify patterns, developing questions and hypotheses, and then testing her hypotheses with experiments. Mary loves to listen to and play folk and rock and roll music. She has been learning to play Celtic music on the mandolin as well as rock and roll music from the ‘60s and ‘70s on the guitar. She received her B.A. in biology from Brown University, her M.S. in biology from the Boston University Marine Program at Woods Hole, and her PhD in zoology from the University of Washington. Mary is a Member of the U.S. National Academy of Sciences, a Fellow of the American Academy of Arts and Sciences, and a Fellow of the California Academy of Sciences. She has been awarded the G. Evelyn Hutchinson Medal from the American Society of Limnology and Oceanography, the Kempe Award for Distinguished Ecologists, a Guggenheim Fellowship, and an honorary doctorate degree from Umeå University in Sweden. In addition, Mary is past president of the Ecological Society of America and the American Society of Naturalists. In our interview Mary shares more about her life and science.