'Geoengineering' is the term for vast schemes that alter the earth's natural systems. There are a load of them being suggested as a solution to climate change.
Hugely expensive, of doubtful effectiveness and with colossal risk of destructive side-effects, they should be being dismissed outright. But as the climate crisis looms larger and we really really don't want to cut our emissions, even the craziest ideas are becoming credible.
I've just published a new article at U-Know called Geoengineering: Biodiversity Kerplunk