The places that are most likely to grow trees for carbon sequestration are places where trees aren't growing now.
“Their blood has washed out their foul footsteps' pollution. No refuge could save the hireling and slave from the terror of flight or the gloom of the grave.”
“Like a plant that starts up in showers and sunshine and does not know which has best helped it to grow, it is difficult to say whether the hard things or the pleasant things did me the most good.”