The climate crisis is the most important challenge facing humanity. We need better ways to help us diagnose and understand the problem, and to build technology in our struggle to preserve the natural stability and resources of this planet for future generations. The open source movement is one answer - it is the key to bringing trusted knowledge, technology and collective action together. We tell stories of open source coders and makers working on collective, community code projects as part of our struggle to preserve the livelihood of our planet. Listen in!