Topic: Regional Greenhouse Gas Initiative

What a national cap-and-trade program might look like

Ten Northeast states already have their own greenhouse-gas emissions regime. It's one model for the federal plan.

How does cap-and-trade work?

There are no paddles or speed-talking auctioneers, and bidding in an auction takes only about 20 minutes.

Letters to the Editor

Readers write about curbing greenhouse-gas emissions through the use of nuclear energy, and how you can help homeless pets.

States lead on scrubbing carbon

Their efforts may be timid, but they show enterprise compared to Washington.

USA

Precedent-setting carbon auction Thursday

East Coast power plants will bid on CO2 permits Sept. 25.