It is time to draw down carbon dioxide but shut down moves to play God with the climate

The global effort to keep climate change to safe levels—ideally within 1.5°C above pre-industrial temperatures—is moving far too slowly. And even if we stopped emitting CO2 today, the long-term impacts of the gas already in the air would continue for decades. For these reasons, we will soon have to focus not only on halting but on reversing global warming.