Scientists Explore Diamond Dust as Costly Climate Cooling Solution

A new study suggests injecting diamond dust into the atmosphere could reduce global temperatures, but at a staggering cost of $200 trillion.

The study, published in Geophysical Research Letters, examined various aerosols for solar geoengineering, finding diamond dust most effective for cooling.
Diamond dust reflects more sunlight and heat than other materials and remains airborne longer without forming acid rain.
Implementing this plan would require injecting 5 million tons of diamond dust annually for 45 years, cooling the planet by 1.6 degrees Celsius.
The estimated cost of using diamond dust is approximately $200 trillion, making it vastly more expensive than sulfur dioxide, a cheaper alternative.
Challenges include the current lack of technology to produce and distribute diamond dust at the necessary scale, requiring international cooperation.