Thanks to climate change, the wild corners of the planet are shrinking or disappearing altogether. How can we preserve the natural world and its creatures? Bernie Krause, Soundscape Artist; Author, Voices of the Wild: Animal Songs, Human Din, and the Call to Save Natural Soundscapes (Yale University Press, 2015) Jason Mark, Editor, Earth Island Journal; Author, Satellites in the High Country: Searching for the Wild in the Age of Man (Island Press, 2015) Tanya Peterson, Director, San Francisco Zoo This program was recorded in front of a live audience at the Commonwealth Club of California on September 24, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

Consumers in Marin and Sonoma already have freedom of choice when it comes to renewable power. Now San Francisco voters are about to have their say. Dawn Weisz, CEO, Marin Clean Energy Geof Syphers, CEO, Sonoma Clean Power Matthew Freedman, Staff Attorney, The Utility Reform Network Phil Ting, California State Assemblymember (D-19) London Breed, President, Board of Supervisors, San Francisco Barbara Hale, Assistant General Manager, San Francisco Public Utility Commission’s Power Enterprise Hunter Stern, Business Representative, International Brotherhood of Electrical Workers This program was recorded in front of a live audience at the Commonwealth Club of California on September 24, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

Few of us will ever venture to the faraway Arctic. But our entire planet is affected by environmental and economic changes happening in the frozen north. William Collins,Director, Climate and Ecosystem Science Division, Lawrence Berkeley National Laboratory Alex Levinson, Executive Director, Pacific Environment Sergey Petrov, Consul General of the Russian Federation in San Francisco Hilde Janne Skorpen, Consul General for Norway in San Francisco This program was recorded in front of a live audience at the Commonwealth Club of California on September 22, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

As the health of our oceans go, so goes the health of our planet. But climate change, overfishing and pollution have taken their toll – what can we do to help? Sylvia Earle, National Geographic Explorer in Residence This program was recorded in front of a live audience at the Commonwealth Club of California on May 27, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

Spray painting the sky to deflect sunlight and cool the earth sounds like science fiction. But could geoengineering buy us time against global warming? Ken Caldeira, Atmospheric Scientist, Carnegie Institution for Science, Stanford University Albert Lin, Professor, UC Davis School of Law Jane Long, Co-chair, Task Force on Geoengineering, Bipartisan Policy Center Armand Neukermans, Physicist and Inventor This program was recorded in front of a live audience at the Commonwealth Club of California on May 8, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

Today we look at fact and fiction in our approach to the climate challenge. A handful of scientists want to tinker with the sky in a process called geo-engineering. Others call this arrogance. Most Americans simply aren’t talking about climate change at all. Why not? Meanwhile, Hollywood has taken notice. It’s rolling out movies depicting a climate catastrophe. Science fiction thrillers describe people resorting to eating bugs after the climate apocalypse. Is truth stranger than fiction? Learn more about your ad choices. Visit megaphone.fm/adchoices

Pope Francis’ bold statement on global warming has prompted a discussion of stewardship across faiths. Can his upcoming visit change the climate in Congress? Rev. Canon Sally Bingham, Founder and President, Regeneration Project Father Paul Fitzgerald, President, University of San Francisco Sam Liccardo, Mayor, San Jose, California This program was recorded in front of a live audience at the Commonwealth Club of California on September 10, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

From fisheries to food safety, California drought to Toledo tapwater, the EPA is waging the battle against climate change both domestically and globally. Gina McCarthy, Administrator, U.S. Environmental Protection Agency This program was recorded in front of a live audience at the Commonwealth Club of California on May 13, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

China is both our economic competitor and an ally in the climate change fight. But can it reduce its carbon footprint while lifting its people out of poverty? Henry Paulson, Former United States Secretary of the Treasury and author of “Dealing with China: An Insider Unmasks the New Economic Superpower” (Twelve, 2015) This program was recorded in front of a live audience at the Commonwealth Club of California on April 28, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices

From hurricanes and superstorms to drought, fire and floods -- what’s causing our country’s extreme weather events, and how can they be prevented? Louise Bedsworth, Deputy Director, California Governor's Office of Planning and Research Kathryn Sullivan, Administrator, National Oceanic and Atmospheric Administration Hunter Cutting, Director of Strategic Communications, Climate Nexus This program was recorded in front of a live audience at the Commonwealth Club of California on March 3, 2015. Learn more about your ad choices. Visit megaphone.fm/adchoices