"The model suggested that injecting 5 million tons of synthetic diamond dust into the atmosphere per year could cool the Earth by 1.6°C in 45 years. The downsid

"The model suggested that injecting 5 million tons of synthetic diamond dust into the atmosphere per year could cool the Earth by 1.6°C in 45 years. The downside, of course, would be the huge cost—approximately $200 trillion." 5 million tons per year for 45 years for $200 trillion to keep the earth temperature about the same as it is now? And do nothing for ocean acidification? Perhaps this was an attempt at satire?