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I'm not sure what the purpose of the linked video is but the host appears to be saying that cloud brightening is being used to counteract climate change. Is this correct?
No evidence provided but the video is so short that it left me wondering what its actual message was.
Anyway:
Typing cloud brightening into Google has barrierreef.org in the results. This site belongs to The Great Barrier Reef Foundation - a legitimate not for profit organisation that is trying to save the reef.
The google link opens the page to their article about marine cloud brightening research/investigations. It seems they are producing clouds to provide shade for the reef which is theorised to help it survive. They use seawater spray to make the clouds and state the process is completely reversible for the local climate.
So it seems cloud brightening is being used or researched but only for some localised areas and only over marine environments, ie not over land. Also, they are NOT using it to counteract climate change.
There are also other sites that mention cloud brightening is only for localised marine environments, even wikipedia.
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