Rogue Chinese factories damaging ozone with use of illegal gases

In May 2018, a startling study revealed that there was an "unexpected and persistent increase" of chlorofluorocarbons (CFCs) in the atmosphere. At the time, scientists could not pinpoint the exact location of the ozone-depleting gas, but subsequent media reports suggested that the clues lead to a rural, industrial town in China. Now, a new study confirms that the rise in CFCs is indeed coming from northeastern China based on atmospheric observations.