The University of California has just published a new textbook on climate change and climate remediation, called. Bending the Curve: Climate Change Solutions. (Editor: V. Ramanathan. Co-Editors: Adam Millard-Ball; Michelle Niemann; Scott Friese. Published by the Regents of the University of California, 2019). It’s freely available to all under a Creative Commons license (CC BY 4.0), which means that anyone can share, adapt, or redistribute the book as long as they give appropriate credit and indicate if changes were made.

You can check out Roger’s contribution, a chapter on the future of negative emissions technologies – ways to remove carbon dioxide from the atmosphere. “Even after we electrify everything, we will still need to clean up the atmosphere. This is because we have been too slow to implement clean energy technology, and some greenhouse gas emissions will be very hard to ever stop, like carbon dioxide from airplanes. In this chapter I discuss the size of this negative emissions challenge and a series of technical approaches we can use to accomplish removing CO2 from the atmosphere at a scale of billions of tons per year. 

“The need to remove carbon dioxide from the atmosphere in order to stay well below 2°C total temperature rise is widely accepted today. The climate models can tell us how much CO2 needs to be removed, and the economic models can tell us how fast changes can be made to existing systems, but the details of these massive new technologies are not well constrained. In this chapter I describe our current under- standing of the general classes of technologies, but it will be up to you, today’s students and tomorrow’s leaders, to establish the details and implement those technologies. You will fnd that there is considerable uncertainty about exactly which approaches will be the most useful— will reforesting poorly used land be the most critical? Will new, as yet untested, approaches come to the fore? All we can say at this point is that there is no obvious silver bullet, and prudence indicates we should develop and test as many approaches as possible.”

The sunset of the oil age will be the beginning of the age of carbon storage. CO2 removed from the atmosphere will be put back underground, using the same skills and equipment that are used today to extract oil. Image by skeeze from Pixabay.