Study finds diamond dust may cool the planet more effectively than sulfur dioxide

Researchers suggest that diamond dust could be a more effective way to cool the planet than sulfur dioxide. A new study indicates that injecting 5 million tons of diamond particles annually could lower global temperatures by 1.6°C. The study used a 3D climate model to compare various aerosol materials. Diamond particles outperformed others, including sulfur dioxide, in reflecting solar radiation over a simulated 45 years. However, the high cost of $200 trillion poses a significant challenge. The feasibility of injecting solid particles into the atmosphere remains uncertain. Current geoengineering efforts primarily focus on sulfate aerosols, which researchers believe are more likely to be deployed in the near term.