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18 October 2018

A clearer path to clean air in China

China has invested billions of dollars to clean up its deadly air pollution, focusing intensely on reducing emissions of sulfur dioxide from coal-burning power plants. A new study shows reducing formaldehyde emissions may be the key to clearing winter air.


3 May 2017

High-altitude aircraft data may help improve climate models

New research in Geophysical Research Letters provides the first actual measurements of the chemical, SO2, in the tropical upper troposphere/lower stratosphere—and there’s a whole lot less than some scientists estimated.