Since there are no currently active contests, we have switched Climate CoLab to read-only mode.
Learn more at
Skip navigation
Share via:


Avoid climate disaster by meeting UN IPCC 8/18 Report requirement to remove 12 Gigatons CO2 yearly via array of Direct Air Capture plants.



The latest (8/18) UN IPCC Report ¹ requires removing 12 Gigatons (Gt) of atmospheric CO2 annually for several decades to avoid catastrophic climate change ². Each Carbon Engineering (CE) ³ Direct Air Capture (DAC) commercial facility "DAC plant" ¹¹ removes 1 Megaton of CO2 per year, thus requiring an array of 12,000 DAC plants to remove 12Gt annually.

A primary aim of this proposal is to supplant the many lines of attacking the CO2 problem with an alternative approach - to treat excess CO2 as an "oil spill in the sky", to be vacuumed up by DAC - the proposal does not require or rely upon the success of any other CO2 reduction scheme, most of which have failed to meet UN targets, as well as do not address removing existing excess CO2, nor does it deem likely that remaining fossil fuel will go undeveloped & that developing nations will curtail their development programs. This proposal’s alternative approach is that it recommends a single, relatively simple, direct & failsafe DAC method of CO2 removal regardless of source or quantity, thereby providing countries the time to make the changes to renewable/sustainable technologies & meet the UN IPCC goals without damaging their economies.

Of all global warming/CO2 removal geo-engineering proposals, DAC plants are the safest because they aren’t ecosystem invasive - serving as a distributed, planetary scale CO2 scrubber, they simply mimic a tree’s CO2 removal ability & give humanity breathing room to develop & switch to Net 0 CO2 tech. Even if all other reduction schemes fail, the DAC array can meet UN IPCC requirements, continue to run as a stopgap to remove future global annual contributions & can be switched off when done.

Category of the action


What actions do you propose?

Global ice is melting far faster than predicted, the current UN report specifies that we have only until 2020 to reverse course, and MIT geophysicist Daniel Rothman predicts that 310 Gt CO2 added to the oceans will trigger a mass extinction level event (ELE) in 2100 ²². Accordingly, our plight seems dire & the time to turn things around is fairly short. The following steps needed to launch a DAC plant array should be doable within 2 years:

1) At the UN level, develop a Franklin Roosevelt-inspired “Dr. Win-the-War” (against Climate Change) program to implement the project. Invoke Defense Production Act to cover costs.

2) Recommend the plan to all countries as the right solution for meeting the UN Millennium Development Goals, particularly “Goal 7: Ensure Environmental Sustainability”.

3) Mass produce DAC plant components in each country using closed manufacturing facilities and giving hiring priorities to laid-off manufacturing workers, utilizing Defense Protection Act & international equivalents as needed.

4) Distribute mass production of DAC plants according to each country’s global CO2 contribution: (In 2017) US 15%, China 28%, India 6%, Russia 5%, Japan 4%, remaining (~190) countries 42%. Additionally, include plans for global distribution, installation, startup & operation.

5) Sequester or repurpose: Extracted CO2 can variously be:

• Converted to fuel using CE's "AIR TO FUELS" (ATF) ³³ tech to make "synthetic…ultra-low carbon intensity transportation fuels… gasoline, diesel, or Jet-A…drop-in compatible with today’s infrastructure and engines…[which] can significantly reduce emissions from…transportation…[&] utilized in materials production of to create steel, concrete, fillers…coatings…plastics, industrial chemicals, fertilizers, and carbonates".

• Sequestered using gear like Norway’s Statoilhydro Sleipner natural gas offshore CO2 sequestration platform. Store in areas like the Norwegian North Sea Sleipner West field sea floor porous rock layer, estimated by Statoilhydro Project manager Tore A. Torp to potentially hold 600 Gigatons of CO2.

• Resold for industrial use in drink carbonation; fresh meat/veg packing anti-bacterial/oxidation agent; greenhouse fertilization.

• Broken down chemically, using solar powered electrolysis/solar thermal/visible light, into O (for Oxygen tank) & CO (as main ingredient of green fuel Methanol).

Who will take these actions?

• Governments will develop & manage the “Dr. Win-the-War” programs.

• Industry will produce DAC plant arrays.

• Academia will determine the optimum design & global distribution of DAC plant arrays. Academia will also be tasked with expanding the scope of greenhouse gas removal to include the other, even more damaging gasses contributing to the problem, particularly methane, from polar permafrost & potential ocean floor methane hydrate melt. Their charter will be to design a variant of a DAC plant that, instead of filtering out CO2, instead filters methane. Note that scientists at Lawrence Livermore have already discovered & tested an effective methane-capturing porous adsorbent material called Zeolite SBN ¹¹¹.

Where will these actions be taken?

Distribute global DAC plant arrays by each country’s global CO2 contribution: (In 2017) US 15%, China 28%, India 6%, Russia 5%, Japan 4%, remaining (~190) countries 42%.

Alternatively, simplify via fewer sites using consortiums of smaller contributors, totaling 4 sites: US, China, BRICS or India/Russia/Japan consortium & a Remaining Countries consortium locatable in Europe, Africa or Latin America.

What are other key benefits?

Running the DAC array over the recommended period of time will reduce CO2 to IPCC-recommended levels and some arrays may be kept running to maintain balance on an ongoing basis. As high CO2  levels are reversed, the worst effects of climate change – melting ice, rising seas, super storms, heat waves, drought and crop failure, and their combined contribution to governmental overwhelming, societal collapse, and political instability – can be mitigated.

What are the proposal’s costs?

For CO2 removal, Carbon Engineering noted in a 2018 Joule article ²²² using a 1Mt DAC plant with ATF CO2 fuel conversion facility could bring "costs down to as low as $94 per ton" & further reported "for the 1 Mt-CO2/year plant…Total project costs [in $M of 2016 $ at] $1,126.8 [-] $779.5" or roughly $1B a plant.

Total Cost: For IPCC 12 Gt CO2 removed annually requires a 12K 1 Mt/yr DAC plant array at $1B a plant = a 1-time payment of $12T, divided by each nation's CO2 output, (in 2017) for US (15%) = $1.8T; China (28%) = $3.36T; India (6%) = $0.72T; Russia (5%) = $0.6T; Japan (4%) = $0.48T, remaining (~190) countries (42%) = $5.04T.

Note that the $12T total is roughly 2/3 the total WWII expenses of over "15 countries…equivalent in purchasing power to [over] $18[T]…in 2018" ³³³.

Extra costs include array operation, admin, utilities & supplies. Power by renewables, with array by river for 24x7 hydropower. Pay by…
(1) getting business to cover its fair share of CO2 contribution by creating a companies pool to invest in & fund the project using a Carbon Offset model.
(2) cover rest of cost as was done in WWII via government funding/incentives/"war bonds"/bank & wealthy individual loans.

Lower Total Cost by…
(1) using the fact that "CE is actively seeking global strategic partners including...Commercial plant developers to build and operate DAC and AIR TO FUELS™ plants", by subtracting the amount of CO2 already extracted, along with  number & cost of these already paid for/built/running plants from the total CO2 & DAC plant figures.
(2) offsets via profits from fuel sales from CE's "AIR TO FUELS".

Negative side effects - the commonest arguments against DAC, & their counter arguments are…
(1) Too expensive: Actually well below WWII cost, a similar global scale problem.
(2) Encourages polluters to renege on reduction commitments: Considering the damage to our world, bad actors can be dealt with by replacing optional cooperation with legislation making it illegal to pollute.

Time line

To best meet the IPCC 12 year deadline, the DAC array should be assembled & switched on within the next few years, then run for the number of decades IPCC recommends to stave off the worst consequences of climate change.

Because of the lateness of the hour, the urgency of the situation, and the fact that we have blown past such tipping points as loss of the Western Antarctic Ice Shelf, exceeded the recommended safe level of atmospheric CO2 350 PPM (as advocated by former NASA & current Columbia University Earth Institute climate scientist Dr. James Hansen), and are now over 400 for several years, the situation is dire. We recommend the most rapid installation possible.

Related proposals

Carbon Rights @ "Based on research by Klaus Lackner".

Cycling Carbon @ "Klaus Lackner’s 'artificial tree'".

End Climate Change Now "1.0" & it’s Web, my original Lackner proposal removes all CO2 added since Industrial Revolution in # years/$B# cost, from 30/6 to 10/20 to 1/200.

* Other proposals cost way more than this proposal’s $12 Trillion, ie £54 Trillion & $70 Trillion; Meanwhile CE's 1 Mt-CO2/year DAC plant has launched.

Note: The preceding links are related proposals, but do not need to be included in this one.


Proposal: Web
Carbon Eng.: Web, Article (1  2  3  4)
DAC Rpt: UN Economist 1 2 3 4 5
Outcome:  The Coming ‘Perfect Storm’ of Natural Disasters
X-Prize: Virgin Earth Challenge  Finalists  Carbon Engineering
CO2 added to Air by…: Industrial Revolution  2004 Annually
• “Ocean Overturn” (BBC): “Killer Lakes” (video)
CO2 Breakdown: Article (1, 2, 3, 4, 5)
Al Gore: Article (1, 2, 3)
USA Budget: 2017
Roosevelt: “Dr. Win the War

tons (t)
e.g. 1 million tons or $ as 1Mt or $1M

¹ SR15
³ CE
¹¹ DAC
²² ELE
³³ ATF
¹¹¹ SBN
²²² Joule (full Vol 1+2 pdf)
³³³ WWII