Smoke from this year's Canadian wildfire season is likely just the beginning. We talk with a fire ecology expert about the role of climate change and what can be done about it. Only a few states have constitutional amendments guaranteeing clean air and water. There's a movement to change that. We'll also hear about a new study that looks at radioactive materials in waterways, which could have come from wastewater treatment plants that accept landfill runoff contaminated with fracking waste.