Geoengineering trials begin

The modern concept of geoengineering (or climate engineering) describes deliberately manipulating the Earth’s climate to counteract the effects of global warming from greenhouse gas emissions.

Field trials for experiments to engineer the climate have begun. Next month a team of UK researchers will hoist one end of a 1-kilometre-long hose aloft using a balloon, then attempt to pump water up it and spray it into the atmosphere.

The water will not affect the climate. Rather, the experiment is a proof of principle to show that we can pump large quantities of material to great heights. If it succeeds, a larger-scale version could one day pump sulphate aerosols into the stratosphere, creating a sunshade that will offset the greenhouse effect. Learn more here.

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