Videos - Climate in Context
How Do We Know It Is Not a Natural Cycle?
When scientists look at climate variations in the past, they don't see anything like today's warming.
Videos - Climate in Context
What Is the Greenhouse Effect?
It's why global warming is happening, and why scientists are so worried about rising levels of carbon dioxide and other gases generated by agriculture, transportation and industry
Videos - States of Change
Washington: Warming and Wildfires
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.
Videos - States of Change
A Fly Fishing Guide Sees Trouble for Trout
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.
Videos - States of Change
A River Keeper’s View of Climate Change
Gordon Rogers, River Keeper of Georgia's Little Satilla River, shows us the impacts he sees in a precious ecosystem along Georgia's coast.
Videos - States of Change
What We Know For Sure
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.
Videos - States of Change
Georgia: Coal and Carbon
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.
Videos - States of Change
Iowa: Corn and Climate
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.
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