How can people of faith respond to the worsening crisis of climate change? How--in the words of Pope Francis's recent encyclical "Care of Our Common Home"--can we learn "to live wisely, to think deeply, and to love generously" as we try to heal our wounded Earth? The challenges we face in trying to answer this practical and ethical dilemma are complex. Citizen-activist David Cain notes, "As science has gotten closer and closer to pinning down the reality of human-caused climate change and its consequences, our moral certitude has frayed." This brief, eloquent book now attempts to address the issues by sketching a moral arc. "Regardless of your religious beliefs," Cain writes, "it's my fervent hope that by adding your own thought narratives to this moral arc, we can strengthen it. In doing so, we resolve the uncertainty paradox all together as we move beyond climate empathy toward action." Climate Guardians is a must-read book for our times.