Travelers bothered by their flight's pollution can pay to reduce it elsewhere. Do offsets work?

Sure, you can plant a tree, but Vitry said that doesn't stop your flight's emissions from entering the atmosphere. The tree may eventually absorb an equivalent amount of emissions. Or it may die. Or ...
Study Finds

Want Lower Electric Bills? Study Finds Most U.S. Homes Are Heating The Wrong Way

Penn State study of 18,000 U.S. homes shows heat pumps, thermostats, and efficient appliances can cut energy use and lower household costs.