Even though it sounds like science fiction, researchers are
taking a second look at a controversial idea that uses futuristic ships to
shoot salt water high into the sky over the oceans, creating clouds that
reflect sunlight and thus counter global warming.
The point of the paper — which includes updates on the
latest study into what kind of ship would be best to spray the salt water into
the sky, how large the water droplets should be and the potential
climatological impacts — is to encourage more scientists to consider the idea
of marine cloud brightening and even poke holes in it. In the paper, he and a
colleague detail an experiment to test the concept.