As Dr. Heidi Cullen reports, the suffocating heat comes on the heels of the government's release of the new climate "normals". Every 10 years, scientists from the National Oceanic and Atmospheric Administration calculate the 30-year averages for temperature and precipitation from thousands of U.S. locations.
Some in Florida who lived through Katrina now are preparing for climate change-related disasters they fear could be more damaging than a hurricane.
Wildfires are on the rise in the State of Washington, as they are in much of the American West and climate change looks at least partly responsible.
Craig Matthews, long-time fly-fishing guide, gives an eyewitness account of the changes he's seen in over thirty-plus years on the rivers around West Yellowstone, Montana.
Gordon Rogers, River Keeper of Georgia's Little Satilla River, shows us the impacts he sees in a precious ecosystem along Georgia's coast.
No scientist disputes that carbon dioxide is a greenhouse gas and that it is increasing in the atmosphere. And careful detective work shows that the increase has chemical fingerprints — from us.
Coal generates carbon dioxide when combusted, which is causing the world to warm. In Georgia, a state that gets over 60 percent of its electricity from coal, some coastal residents are connecting the dots between coal and changes in the local ecology and economy attributed to global warming.
Congress helped bolster the corn ethanol business in Iowa by mandating the Renewable Fuel Standard in 2005. But scientists are concerned about the unexpected consequences of putting more of Iowa's land into corn production.