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A Modest Proposal For Sequestration of CO2 In the Antarctic
First time accepted submitter Alienwise writes "Judith Curry reports a scientific concept of an atmospheric CO2 sequestration plant. It would be based in the Antartic to profit from the cold weather, which would facilitate the creation of CO2 snow — which would then be buried. The plant could be powered by windmills." The lead author has agreed to let Curry link to a copy of the final manuscript, if you'd like to read more.
The amount of heat produced directly by all human activity combined is tiny compared to the heat applied by the sunlight the earth receives. The contribution of all human direct heat production is so small that no large-scale analysis of global heat retention even bothers to include it. Global warming is effectively entirely the result of increasing CO2, which increases the amount of incoming solar heat the Earth retains. Removing significant amounts of CO2 from the atmosphere would relieve global warming regardless of how much direct heat the process generated.