More on the work at New York's Columbia University, printed in a United Kingdom newspaper, concerning the capture and use of CO2.
An excerpt:
"Lackner says that device works, but the "humidity switch" could slash the scrubber's energy use tenfold. He said: "We can do it coming out carbon positive."
The team is also working on ways to dispose of the pure CO2 gas produced by each scrubber.
The patent suggests the scrubber could be connected to greenhouses, where the CO2 would boost plant growth. Or the gas could be used to grow algae, for food, fertiliser or fuel. The latter could "close the carbon loop," Lackner said."