https://www.vox.com/energy-and-environment/2018/10/24/18001538/climate-change-co2-removal-negative-emissions-cdr-carbon-dioxide
The best time to start the fight against climate change was 20 years ago. The second best time is right now. But since we’re so far behind, we have no option other than to try to roll the clock back and clean up the mess we’ve made.
In its most recent assessment, the Intergovernmental Panel on Climate Change (IPCC) reported that we may have as little as 12 years to cut our greenhouse gas emissions in half compared to today’s levels to limit average global warming to 1.5…