Central America's Nature Air is the only airline to offset all of its CO2 emissions.
Photo: Nature Air

by Brook Wilkinson

Every traveler knows that airline flights emit a significant amount of greenhouse gases. Responsible travelers know how to minimize their mile-high carbon footprint. Several groups in attendance at the recent World Travel Market called for a standard system that would measure the carbon emissions of each and every flight -- a veritable eco-label for airline travel. But until such a system is set up, here are two tips you can use to increase the energy efficiency of your flights:

Choose nonstop flights whenever possible. The greatest amount of carbon is emitted during takeoff and landing, so by having only one of each, you'll be choosing a greener option. It may cost you $50 more, but your grandchildren will thank you.

Pack lightly. According to a report by The Carbon Consultancy, if every passenger on a typical flight from England to Spain left 11 pounds of baggage at home, carbon dioxide emissions would be reduced by 44 percent. (Boy, does that make me feel guilty for the five bottles of wine I brought back from Argentina last month!) You can read my blog post on how to pack lightly -- a necessary skill for any travel writer -- here.