Summertime is road trip time for many of us in the United States.
That makes it a good time to look at what our relationship with the road has meant for global warming.
The data crunchers at the Frontier Group, a research organization focused on sustainability, sought to answer that question by looking at gasoline consumption since 1949, the year the United States started tracking transportation data.
They estimated that if American cars, S.U.V.s and pickup trucks were their own country, they would be the sixth-largest emitter of heat-trapping carbon dioxide emissions since 1949, putting them behind the total national carbon dioxide emissions produced by the United States, China, Russia, Germany and Japan.
Add other forms of transportation, including heavy trucks, trains and planes, and U.S. transportation would be the fourth-largest carbon emitter, producing around 6.5 percent of the carbon dioxide that’s accumulated in the atmosphere over the last seven decades.
Organizations:
Frontier Group
Locations:
United States, China, Russia, Germany, Japan, U.S