Clouds of self-levitating soot might help halt global warming



A new geoengineering method relying on clouds of soot mixed with sun-reflecting particles that propel itself into the stratosphere has been proposed by researchers as a possible solution to curb progressing climate warming if emission reductions fail. 

Inspired by naturally-occurring effects observed in the aftermath of powerful volcanic eruptions, many scientists have theorized that dispersing tiny aerosol particles at high altitudes could help halt climate change. Following major eruptions, large quantities of gas and ash spewed by some volcanoes high into the atmosphere can temporarily cool down the planet. For example, the 1991 eruption of Mount Pinatubo in the Philippines caused a dip of one degree Fahrenheit (0.6 degrees Celsius) in average global temperatures, which was measurable over a period of 15 months.





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