You don't have to spend a lot to lower your energy consumption. From North Carolina Public Radio, Janet Babin reports.

The U.S. is going to have trouble funding alternative energy if it waits for a carbon tax. Commentator Robert Reich says we should look to oil companies to provide the money.

The European Union wants all airlines flying in and out of its airspace to cut greenhouse gas emissions. The U.S. and other countries say that's not legal. Stephen Beard reports.

A new study says climate change could cost the world economy more than $6 trillion unless drastic, international action is taken now. The good news: The cost might be pretty reasonable. Stephen Beard reports.

A global-warming report out this week says the price of global poverty and mass migration due to climate change outweighs the costs of taking urgent steps to push back warming. Commentator Mark Hertsgaard argues a green planet and a healthy economy are actually inextricably linked.

Gas prices are up, gas prices are down — but where does that leave alternative energy technology? As Sam Eaton reports, a lot would have to change to make alternative fuels economically viable.

Commentator David Frum argues you don't have to believe in human-induced global warming to support a tax on carbon dioxide.

Election Day is three weeks away and the political winds seem to be blowing in a "lefterly" direction. In Washington, lobbying firms are already prepping for the Democrats' possible return to relevance, Scott Tong reports.

Xcel Energy plans to build a clean-coal power plant to capture its CO2 emissions. It's hailed as a breakthrough in addressing global warming — but Colorado ratepayers may be stuck with a billion dollar bill. Sam Eaton looks at clean energy's next big hurdle: the tab.

Congress is out until Election Day and politicians are back in their home districts buying ads and making speeches. But are they solving anything we really care about? Scott Tong reports.