Reforestation
Much of North America, especially in the
eastern U.S. and Canada, was deforested early in the 19th century. Much of this forest is now regrowing. As the forest
grows in size, carbon is incorporated into the trees.
This accounts for perhaps 0.5 gigatons
of carbon. Of the
7.5 gigatons being put into the atmosphere, we’ve now accounted
for roughly 5.5. That leaves 2
to go.