The moral challenges of today are unfamiliar in the history of philosophy. Climate change is the paradigm example of what Travis Rieder calls “The Puzzle” in the way your choices can seem at odds with what the planet urgently needs. How do we decide the right thing to do in the face of a massive collective challenge? The Puzzle, as he explains, is everywhere now. Old fashioned exercises like trolley problems involving sacrificing one person on this track for a bunch of people on the other don't address the huge consequential and complex crises our global community faces today. Expanding our suite of ethical concepts is now urgently required. Rieder defines exactly how to change our thinking, addressing mundane issues like bottled water to the biggies like whether to have children. This is a way to live a morally decent life in the scary, always complicated world we and our children live in.