In 2012, the U.S. added over 39 billion metric tons of carbon dioxide to the atmosphere. That’s equivalent to a pile of 33-foot-diameter one-metric-ton spheres stacked 2.3 miles high and 4.6 miles across. Continue reading.
In 2012, the U.S. added over 39 billion metric tons of carbon dioxide to the atmosphere. That’s equivalent to a pile of 33-foot-diameter one-metric-ton spheres stacked 2.3 miles high and 4.6 miles across. Continue reading.