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NASA says soot leading cause of global warming

WASHINGTON, D.C. -- NASA scientists have released a report indicating soot from diesel engines is a leading contrib...


WASHINGTON, D.C. — NASA scientists have released a report indicating soot from diesel engines is a leading contributor to global warming.

The recent report says soot reduces the ability of snow and ice to reflect sunlight, which could cause as much as a quarter of all observed global warming.

“We suggest that soot contributes to near worldwide melting of ice that is usually attributed solely to global warming,” NASA scientists James Hansen and Larissa Nazarenko wrote in the Proceedings of the National Academy of Sciences. “Soot is a more all-around ‘bad actor’ than has been appreciated.”

The report also says soot is twice as harmful as carbon dioxide when it comes to changing global surface air temperatures in the Arctic.


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