Many factors—population growth, meat-intensive diets, unsustainable agricultural practices—are driving the world toward a food crisis. Enter climate change. A new IPCC report paints a dire picture about how the impacts of climate change—disrupted hydrological patterns, ecosystem shifts, changes in arable land—will exacerbate the challenge of feeding a growing population in the coming decades. It’s a vicious cycle: conventional agricultural practices contribute mightily to climate change, and climate change undercuts food output. Shifting to a sustainable trajectory will require changing diets away from animal-based foods, reducing waste in every step from farm to final consumption, embracing agroecological growing methods, and planting many more trees. Global action will determine whether we sow the seeds of change—or disaster.