Mari Copeny, also known as “Little Miss Flint,” wanted to help her city get clean water. At just 8 years old, she wrote a letter to President Obama to tell him about the water crisis in her city. Then, her brave voice made a big impact. You can find Mari in the new book Rebel Girls: 100 Inspiring Young Changemakers! We're celebrating all September long with two special Changemakers podcast episodes each week. Preorder Rebel Girls: 100 Inspiring Young Changemakers wherever books are sold to learn about how girls just like you are changing the world.  This story was produced and directed by Haley Dapkus with sound design and mixing by Mumble Media. It was written by Apryl Lee and edited by Abby Sher. Narration by LaKira Porter. Fact checking by Joe Rhatigan and sensitivity read by Schuyler Swenson. Thank you to the whole Rebel Girls team who makes this podcast possible. Stay rebel!