Here are some questions and answers about what was announced by the EPA, and what it means for international climate negotiations, action in Congress and global warming in general.
A gas line exploded Monday at a technology plant in northern Illinois, sending aloft debris that killed a man at a nearby highway rest area.
Stanford scientists are harnessing nanotechnology to quickly produce ultra-lightweight, bendable batteries and supercapacitors in the form of everyday paper.
An Arizona State University research team has developed a process that removes a key obstacle to producing lower-cost, renewable biofuels.
Meadow muffins, better known as cow manure, have a future in producing electricity.
Reed's, maker of top-selling sodas in natural food stores nationwide, announced that it will begin producing new products designed to compete with existing over the counter medicines.
The Environmental Protection Agency reported that toxic chemical pollution from the nation's industrial plants, mines and factories declined by 6 percent in 2008.
A fire and explosion at the Motiva Enterprises LLC refinery complex in Port Arthur shut down the hydrogen unit but caused no injuries.
More Americans believe steps taken to reduce global warming pollution will help the U.S. economy than say such measures will hurt it.
General Electric CEO Jeffrey Immelt said Tuesday the giant conglomerate is undergoing a renewal after what has been one of the most difficult years in the company's 117-year history.
Ashland Inc. said Tuesday it sold its resins business to a unit of private equity company TorQuest Partners for $75 million
Steel giant ArcelorMittal said Tuesday it will cut an unspecified number of jobs next year and stick with plans to use 70 percent of its capacity in the current quarter.
Vermont's attorney general said he wants more information from dairy farmers who say they have been squeezed by milk processors.
Officials say roughly two dozen people were sickened by fumes from hydrochloric acid at a plant in the Mississippi River city of Quincy.