Clayton Thomas-Müller found healing in his Cree heritage, and now he’s working to heal the earth. The best-selling author of Life in the City of Dirty Water, and award-winning director of the documentary of the same name, is an internationally recognized activist for Indigenous rights and the environment. He shares his journey through intergenerational trauma, his transition from fighting gang life to fighting for human rights – and how Indigenous knowledge can help us all address climate change.