Politics stateimpact.npr.org Clean air laws helped reduce air pollution. But climate change could reverse those gains More heat will make American cities smoggier.
Impacts www.post-gazette.com County seeks new air quality regulations to combat unhealthy smog Proposals would address bad air caused by weather inversions that are expected to increase due to climate change.
Opinion www.post-gazette.com Harry Hochheiser:Clean our air, protect our climate Effective legislation can help solve this problem.
