Leonard had long supported unsuccessful efforts to get Congress to adopt some form of
carbon cap and trade initiative, where the federal government would enforce a
slowly lowering cap
on emissions, with some companies selling
reductions beyond their cap levels to others that were likely to violate the cap.
As climate change creates increasing impacts
on our planetary ecosystem and the pace of
carbon reduction makes many people fear that we are moving too
slowly to avert a catastrophe, some scientists have promoted GeoEngineering as a way to stave off disaster.