Tuesday, November 29News That Matters
Shadow

Tag: stunting

Unregulated chemicals may be stunting ozone recovery, new study suggests

Unregulated chemicals may be stunting ozone recovery, new study suggests

Science
June 27 (UPI) -- According to new research in England, several unregulated chemicals may be delaying the recovery of the ozone.The depletion of the ozone in the 1970s and 80s was caused by the proliferation of chlorofluorocarbons, chlorine derivatives used in aerosol cans, refrigerators and many other products and appliances. After the 1987 passage of the Montreal Protocol, the first treaty unanimously ratified by all members of the United Nations, CFCs were almost entirely phased out.A number of recent studies have detailed the slow but steady recovery of the ozone layer over the last three decades, but the latest study suggests there is room for improvement.Scientists at the University of Lancaster say atmospheric concentrations of dichloromethane, a short-lived, ozone-depleting substanc...