When we think of green buildings, we tend to think of new ones-the kind of modern, solar-paneled masterpieces that make the covers of architecture magazines.But the US has more than 100 million existing homes, and it would be incredibly 1 to tear them all down and 2 them with greener ...
"I feel very strongly that the benefits that come from broadening our minds, from cross cultural understanding—the positive impacts of that are so much greater than the carbon impacts that come from the travel to and from," said Martens. "My goal is not to get people to travel less. Car...