Check out some of our most popular and favorite interviews of all time:

• Jane Goodall
• Michael Pollan
• Tom Friedman
• Barbara Kingsolver
• Robert F. Kennedy Jr.
• Nick Kristof
• Arianna Huffington
• Ashley Judd

This week on Sierra Club Radio:

• Jeff Grybowski, the CEO of Deepwater Wind, on America's first offshore wind project which recently broke ground
• Lena Moffitt, Director of the Sierra Club's Dirty Fuels Campaign, on the latest with the fight to stop the Keystone XL pipeline

This week on Sierra Club Radio:

• The Mayor of Little Rock, Mark Stodola, on efforts to make Little Rock more sustainable
• The Sierra Club' s Terry McGuire on why we should care about smog and a new text alert system to stay informed about air quality in your area

This week on Sierra Club Radio:

• In conversation with Elizabeth Colbert on on her book The Sixth Extinction which just won the Pulitzer prize for non-fiction. 

This week on Sierra Club Radio:

• Jean Wiener (Haiti) and Howard Wood (Scotland), two winners of the 2015 Goldman Prize talk about their work
• Chef Annie Somerville with a recipe for a fresh salad with cherries

This week on Sierra Club Radio:

We're honored to talk with grassroots hero and renowned environmental activist Lois Gibbs, whose work in Love Canal in the 1970's sparked a movement to clean up toxic waste. She talks with us about creative tactics in activism; what gives her hope; and her work now as Executive Director of the Center for Health, Environment, and Justice. 

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• Astrophysicist Roberto Trotta talks with us about his book, The Edge of the Sky, which explains the history of the universe using only the 1,000 most common words in the English language
• Peter Martin, Executive Director of the Sierra Club Foundation, on why he's running the Boston Marathon to raise money for Sierra Club Outdoors

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• McKenzie Funk, author of Windfall: The Booming Business of Global Warming
• Katrina Blair, author of The Wild Wisdom of Weeds

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• Journalist Elizabeth Kolbert joins us to talk about her recent New Yorker article on the extraordinary efforts to repair New Zealand's unique environment 
• Chris Thomas, Chief Innovation Officer for the Sierra Club, on a new platform for online activism called AddUp

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• Charles Duhigg, author of The Power of Habit: Why We Do What We Do In Life And Business.
• Filmmaker John Gussman on his film Return of the River, a film about the largest dam removal project in the history of the U.S. and the activists' effort to restore the river.

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• Hawaii State Senator Mike Gabbard on his efforts to pass a bill that calls for 100% clean energy in Hawaii.
• Stephen Leahy, author of Your Water Footprint: The Shocking Facts About How Much Water We Use to Make Everyday Products.
• Michelle Atkinson, the Chief Marketing Officer of Energizer, on their launch of new batteries with recycled content

This week on Sierra Club Radio:

Our host Orli Cotel is back! And now recording new shows...

• Naomi Oreskes, author of the book Merchants of Doubt, talks with us about the new film based on her book, which exposes the disturbing right-wing campaign to sow seeds of doubt around climate science.
• Dan Chu from the Sierra Club's Our Wild America campaign shares good news about President Obama's designation of new national monuments.

This week on Sierra Club Radio:

• Billy Parrish, the founder of Mosaic, talking about a vision for 100% clean energy in the United States
• Author Joel Greenberg talking about his new book A Feathered River Across the Sky: The Passenger Pigeon's Flight to Extinction
• Ask Mr Green answers a question about nearby supermarkets vs distant farmer's markets.

This week on Sierra Club Radio:

• Filmmaker Jon Shenk on his new documentary The Island President, which tells the story of the leader of the Maldives, an island nation that could be entirely underwater if sea levels rise due to climate disruption.

• Kristin Urquiza from Corporate Accountability International talks with us about World Water Day and their new Public Water Works! campaign

This week on Sierra Club Radio:

• Amy Korst, author of The Zero Waste Lifestyle
• Mike Schade from the Center for Health, Environment, and Justice on their campaign to get PVC plastics out of New York City's schools

This week on Sierra Club Radio:

• David Skorton, President of Cornell University, talks about the school's plans to move beyond coal 
• Chef Annie Somerville gives green cuisine tips 
• Ideas for a green Valentine's Day from Sierra Magazine's Avital Andrews
• Melody Grote and Terry Kellogg from a group called One Percent for the Planet about helping businesses give back.

This week on Sierra Club Radio:

• Garvin Jabusch, cofounder of Green Alpha Investors, talks with us about green investing 
• Diana Beresford-Kroeger on her book, The Global Forest 
• Green cuisine tips from Annie Somerville, Executive Chef at Greens Restaurant.

This week on Sierra Club Radio:

• Emily Green, Sierra Club's Great Lakes Director, on a big threat to the Great Lakes that many don't know about: invasive Asian carp
• Eugene Buchanan on his new book Outdoor Parents, Outdoor Kids
• Avital from Sierra Magazine gives tips on greening our schools
• Annie Somerville, Executive Chef of Greens Restaurant, shares green cuisine tips

This week on Sierra Club Radio:

• Hollywood Actress Eva Mendes talks about why environmental issues are important to her, and what she does to go green
• Tierra Del Forte from Fair Trade USA on green Fair Trade fashion
• Green cuisine tips from Annie Somerville, Executive Chef of Greens Restaurant.

This week on Sierra Club Radio:

• Dr. Alan Lockwood, author of The Silent Epidemic: Coal and the Hidden Threat to Health
• Gary Lincoff, author of The Joy of Foraging, talks with us about wild foods that you can find in your neighborhood
• Green cuisine tips from Annie Somerville, executive chef at Greens Restaurant in San Francisco

This week on Sierra Club Radio:

• Dr. Alan Lockwood, author of The Silent Epidemic: Coal and the Hidden Threat to Health
• Gary Lincoff, author of The Joy of Foraging, talks with us about wild foods that you can find in your neighborhood
• Green cuisine tips from Annie Somerville, executive chef at Greens Restaurant in San Francisco

This week on Sierra Club Radio:

• Steve Hawk and Ami Vitale talk with us about a new photo series in Sierra magazine, The Cost of Coal
• Wendy Pabich on her book Taking on Water: How One Water Expert Challenged Her Inner Hypocrite, Reduced Her Water Footprint (Without Sacrificing a Toasty Shower), and Found Nirvana

This week on Sierra Club Radio:

• Chuck Leavell, keyboardist for the Rolling Stones, on his new environmental project, the Mother Nature Network 
• Ricki Ott, author of a new book called Not One Drop: Betrayal and Courage in the Wake of the Exxon-Valdez Oil Spill 
• Nicole Rowell Ryan, daughter of the late renowned nature photographer Galen Rowell, on her father's life and work.

This week on Sierra Club Radio:

This week we revisit a show from December 2011 where we talked with:

1. Adventurer and environmentalist David de Rothschild on his trip to the Amazon to discover the impact of the proposed Belo Monte dam project 
2. Scott Bernstein, President of the Center for Neighborhood Technology, on the unseen costs of driving 
3. Sara Ost, Editor in Chief of EcoSalon.

This week on Sierra Club Radio:

• Janine Benyus, President of the Biomimicry Institute
• Adam Werbach, co-founder of Yerdle, a green website that promotes sharing instead of shopping
• Avital Andrews on green gift ideas

This week on Sierra Club Radio:

• Sandor Katz, author of Wild Fermentation and The Art of Fermentation
• Bruce Rich, author of Foreclosing the Future: The World Bank and the Politics of Environmental Destruction

This week on Sierra Club Radio:

• Phaedra Ellis-Lamkins, the CEO of Green For All.
• Dominick Della Sala, Chief Scientist for the Geos Institute in Ashland, talks with us about the forests of the Pacific Northwest.
• Avital Andrews from Sierra Magazine gives tips on how to protect yourself from mercury, and which fish are safer to eat.

This week on Sierra Club Radio:

• Kat Taylor, CEO and co-founder of One Pacific Coast Bank, joins us to talk about how your money can align with your values.
• Kate Galbraith, co-author of The Great Texas Wind Rush: How George Bush, Ann Richards, and a Bunch of Tinkerers Helped the Oil and Gas State Win the Race to Wind Power

This week on Sierra Club Radio:

• Whale expert and naturalist Doug Chadwick on his book, The Grandest of Lives: Eye to Eye with Whales
• Andrea and Steve Bossio, whose family was featured on Dateline NBC when they were tested to see how many chemicals really end up in our bodies
• Steve Mills, director of Sierra Club's International Programs, talks about India's green future.

This week on Sierra Club Radio:

We revisit our National Parks special! In Part 1,

• Award-winning filmmaker Ken Burns talks with us about his documentary series, The National Parks: America's Best Idea.
• Journalist Joan Hamilton on her article, Parks as Arks: In a warming world, national parks become labs where species learn to survive.

This week on Sierra Club Radio:

• Tara Smith talks with us about her journey from the boardroom to the barnyard - leaving the corporate life to start a sustainable farm.
• Sierra Magazine's Avital Andrews share tips for green back-to-school products.

This week on Sierra Club Radio:

• Nick Rosen talks with us about his book Off the Grid
• Avital Andrews from Sierra Magazine gives tips for greening your Halloween
• Barbara Bennett on her book Soul of a Lion: One Woman's Quest to Rescue Africa's Wildlife Refugees.

This week on Sierra Club Radio:

• New York Times food columnist Mark Bittman talks with us about his new book, VB6: Eat Vegan Before 6:00 to Lose Weight and Restore Your Health...for Good

• Angelika Pullen from WindMade talks about certifying products made from clean energy

• Arturo Carmona from Presente.org on the importance of solar power

This week on Sierra Club Radio:

• Rachel Botsman and Roo Rogers on their book What's Mine is Yours: The Rise of Collaborative Consumption

• Avital Binshtock from Sierra Magazine gives tips for greening your bathroom

• Cris Costello talks with us about "red tide" in Florida and how the widespread use of fertilizers are affecting our oceans.

• Skip Yowell, the co-founder of Jansport, talks with us about his book The Hippie Guide to Climbing the Corporate Ladder and Other Mountains

This week on Sierra Club Radio:

• Richard Bell, co-author of a book called Nukespeak

• Avital Binshtock from Sierra Magazine shares tips on how to green your office

• Cris Costello talks with us about "red tide" in Florida and how the widespread use of fertilizers are affecting our oceans.

• Annie Somerville on cooking with pumpkins

• Ask Mr. Green

This week on Sierra Club Radio:

Repeat show from November 13, 2010

• Mark Sumner, author of The Evolution of Everything: How Selection Shapes Culture, Commerce, and Nature
• Martin Reed from I Love Blue Sea, on sustainable seafood
• Steve Pine and Agnes Kovacs from the Chicago Zoological Society talk with us about polar bears.

This week on Sierra Club Radio:

• Jeanine Cotter, CEO of solar installation company Luminalt
• Rachel Butler, National Organizer for the Sierra Club's Green Transportation Campaign, on the increase in bike commuting
• Avital Andrews from Sierra Magazine talks about whether or not fast food can be green

This week on Sierra Club Radio:

• Natalie Foster, Executive Director of Peers, a grassroots organization that supports the sharing economy movement
• Sierra Magazine's Avital Andrews shares green lifestyle tips

This week on Sierra Club Radio:

• Peter Scott from Burn Design Labs talks with us about sustainable stoves in the developing world
• William Anderson from the Native American Moapa Band of Paiutes tribe on the Reid Gardner coal plant

This week on Sierra Club Radio:

• Rob Forbes, founder of Design Within Reach, talks about his new company PUBLIC Bikes
• Kim Wasserman from Little Village Environmental Justice Organization, and a mother of two kids with asthma, on why it's time to retire Chicago's coal plants.
• Avital Andrews from Sierra Magazine shares tips on how to go green with microwaveable food.

This week on Sierra Club Radio:

For our 400th episode we go back into the archives to some of our favorite guests: Ashley Judd and Arianna Huffington.

This week on Sierra Club Radio:

Our last in a four part series revisiting previous winners of the Goldman prize.  This week, 2010 winners Lynn Henning and Humberto Rios Labrada as well as 2008 winners Rosa Hilda Ramos and Ignace Schops

This week on Sierra Club Radio:

The 3rd in our 4 part series on previous Goldman Prize winners - this week, Hilton Kelley and Dmitry Lisitsyn, two of the winners from 2011.

Catherine Tatge on her film, John Muir in the New World, which aired as part of the PBS American Masters series.

Ask Mr. Green.

This week on Sierra Club Radio:

Our second in a four-part series that looks back at past winners of the Goldman Prize, the premier international award for environmental activism. This week, Ikal Angelei and Caroline Cannon, two of the winners of the 2012 Goldman Prize.

This week on Sierra Club Radio:

• Our first in a four-part series that looks back at past winners of the Goldman Prize, the premier international award for environmental activism. This week, Maria Gunnoe and Yuyun Ismawati, two of the winners of the 2009 Goldman Prize.

• Filmmaker Curt Ellis on his documentary, The Greening of Southie, about Boston's first residential green building.

This week on Sierra Club Radio:

• Jigar Shah joins us to talk about the solar industry and his new book, Creating Climate Wealth: Unlocking the Impact Economy

• Eric Roston from Bloomberg.com on their environmental coverage at Bloomberg.com/Sustainability

This week on Sierra Club Radio:

• Ben Montgomery on his book Grandma Gatewood's Walk: The Inspiring Story of the Woman Who Saved the Appalachian Trail

• Henry Nichols, author of The Galapagos

• Avital Andrews shares green tips for the 4th of July weekend

This week on Sierra Club Radio:

• Sierra Club's Aaron Isherwood talks with us about his recent trip to the Amazon to learn about the Achuar people's fight against oil drilling on their land

• Jay Shoenberger on his new book, I Am Coyote, an anthology of great wilderness writings

• Green living tips from Sierra Magazine's Avital Andrews

This week on Sierra Club Radio:

• Paul Loeb talks with us about the new edition of his book, The Impossible Will Take a Little While

• Mary Anne Hitt on a major step forward on climate -- the EPA's new proposed limits on carbon pollution from power plants

• Avital Andrews from Sierra Magazine shares green living tips

This week on Sierra Club Radio:

• We bring back one of our favorite interviews, a recent conversation with the legendary Dr. Jane Goodall about her new book, Seeds of Hope.

This week on Sierra Club Radio:

• Congressman John Sarbanes on why we need to get big money out of politics
• Mary Anne Hitt on a new report that shows the dangers of coal ash pollution, and what you can do about it
• Green living tips from Sierra Magazine's Avital Andrews