Formaldehyde — not sulfur dioxide — may be the key to China’s stubborn problem of wintertime air pollution — ScienceDaily

For more than 15 years, the Chinese government 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. These efforts have succeeded in reducing sulfur dioxide emissions, but extreme pollution events are still a regular wintertime occurrence and experts estimate that […]