Study attributes mysterious rise in CFC emissions to eastern Chinese manufacturing

A new study reported in Nature (Sci-Hub mirror) tracks down the origins of the mysterious rise in CFC-11, a banned ozone-depleting greenhouse gas whose rise was first reported a year ago, and blames the increase on manufacturing in eastern China. Read the rest

Rising levels of a banned chemical are threatening the ozone layer (again)

CFC-11 was phased out under 1987's Montreal Protocol and the immediate halt of its usage has done much to reverse ozone depletion in the years since; but since 2012, atmospheric levels of CFC-11 have risen by 25%, eroding the still-healing ozone layer and suggesting that someone, somewhere, has started manufacturing the substance again. Read the rest