This company wants to solve global warming using giant fans.

Canadian company Carbon Engineering is building machines that suck carbon dioxide out of the air by pulling it through a fluid, where it can either be discarded or recycled to be used as fuel.

Trees do the same thing, but the fan machines would ideally be built in areas where you couldn't plant trees, such as deserts, Popular Science reported.

Technologies have already been developed for capturing carbon dioxide from smokestacks before it reaches and pollutes the atmosphere, for example. But Carbon Engineering plans to do it by capturing CO2 that's already in the air, like emissions from cars, trucks, and planes.

David Fuller's view

I am glad that people are addressing the challenge but this project sounds noisy, cumbersome and with too many moving parts to be efficient.