Keeping global warming under control will require the removal of between 450 billion and 1.1 trillion tons of CO2 from the atmosphere by 2100, according to the first global report dedicated to the topic, released in January. That would require the CDR sector “to grow at a rate of about 30 percent per year over the next 30 years, much like what happened with wind and solar,” said one of its authors, Gregory Nemet.