What are the commonalities between scaling the world's highest peaks and tackling the most challenging pollution problems? What was it like to enter the worlds of climbing and chemistry as a woman in the 1960s and 70s? With us to answer these questions is Arlene Blum. Arlene completed a bachelor's degree at Reed College in 1966 and a PhD in biophysical chemistry at Berkeley in 1971. She was a pioneering alpinist early in her career and a founder of the Green Science Policy Institute later in her career. She is the author of Annapurna - A Woman's Place, published by Counterpoint in 1980, and Breaking Trail, A Climbing Life, published by Harcourt in 2005.