By 2050, about 70 percent of the world’s population will go about their daily lives in cities. They’ll do all the things that make up a quotidian life: eating, traveling from home to work to school, cool down in the supercharged summers and warm up in the winter, and more.

All of those experiences cost a lot of energy and currently, that energy costs a lot of carbon. Urban dwellers, as a whole, end up being responsible for a whopping three-quarters of all today’s greenhouse gas emissions. But it doesn’t have to be that way, a new report from the Coalition for Urban Transitions stresses: Using technologies and policies that already exist today, cities could cut their carbon emissions