Gregory Nemet, a co-author of the “State of Carbon Dioxide Removal” report and a public policy professor at University of Wisconsin at Madison, told me that pretty much all successful CO2 removal to date has come from natural climate solutions like protecting forests, planting trees and better managing soils. So I asked him, “Why not invest heavily in that?” To my mind, supporting and expanding the extraordinary potential of natural ecosystems to perform carbon removal is what investors and policymakers should be focusing on — not fantastical machines.