As the Trump administration rolls back federal climate rules, cities and states are pioneering local solutions that reduce emissions and build climate resilience. From Denver's innovative district heating system to neighborhood pocket forests in Massachusetts, communities prove that meaningful climate action doesn't require waiting for Washington. Denver is retrofitting a 140-year-old steam pipe network to use water-based heat pumps powered by geothermal energy and recovered sewage heat, creating an efficient system that could save money while cutting fossil fuel dependence.