Sprinkling diamond dust into the atmosphere could offset almost all the warming caused by humans since the industrial revolution and “buy us some time” with climate change, scientists say.
New research indicates that shooting 5.5 million tons (5 million metric tons) of diamond dust into the stratosphere every year could cool the planet by 1.8 degrees Fahrenheit (1 degree Celsius) thanks to the gems’ reflective properties. This extent of cooling would go a long way to limiting global warming that began in the second half of the 19th century and now amounts to about 2.45 F (1.36 C), according to NASA.
The research contributes to a field of geoengineering that’s looking for ways to fight climate change by reducing the amount of energy reaching Earth from the sun.
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