A banned CFC is destroying the ozone and nobody can find its source

Scientists spent years campaigning for a ban on the ozone-damaging chemical CFC-11, but 30 years after it was phased out in the 1987 Montreal Protocol, someone somewhere is breaking the rules. According to the National Oceanic and Atmospheric Adminis…
Source: Engadget | A banned CFC is destroying the ozone and nobody can find its source