What We Know For Sure

What We Know For Sure

  • Published: Jun 1st, 2009

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.

Georgia: Coal and Carbon

Georgia: Coal and Carbon

  • Published: May 19th, 2009

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.

Iowa: Corn and Climate

Iowa: Corn and Climate

  • Published: Jan 28th, 2009

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.

Montana: Trout and Drought

Montana: Trout and Drought

  • Published: Oct 31st, 2008

Montana's recreational fishing and agricultural industries depend on cool waters flowing from melting snow high in the mountains throughout the summer. But across Montana, rising temperatures are causing a series of changes.

Montana’s Wind Energy Potential

Montana’s Wind Energy Potential

  • Published: Oct 31st, 2008

Montana's estimated wind power potential is about equal to the electricity consumed by the 19 lighted states.