This week Science Mike talks with Mary Anne Hitt about how to mitigate climate change caused by human activity. Mary Anne Hitt directs the Sierra Club’s Beyond Coal Campaign, which has been recognized as one of the most successful environmental campaigns in history. Working with partners across the nation, the campaign has blocked the construction of 200 proposed US coal plants, secured retirement of over half of existing US coal plants, and helped usher in the clean energy era. She is also co-host of the climate storytelling podcast No Place Like Home, with her friend Anna Jane Joyner. She lives in West Virginia with her family.