> We need to remove hundreds of billions of tons of Carbon from the atmosphere in order to avoid catastrophic global warming.
Only if you believe the predictions of the models used by the IPCC, which have already been falsified by the data. CO2 has been rising according to the most pessimistic "business as usual" model scenario, but actual warming has been less than that predicted by the most optimistic "massive reductions in CO2 have already happened" scenario. This is the huge elephant in the room that is never mentioned by climate change alarmists.