Ozone layer may be restored in decades, UN report says - BBC News
Ozone layer may be restored in decades, UN report says - BBC News A global agreement in 1987 to ban chemicals harming the ozone layer is working, scientists say.LINK
Ozone layer may be restored in decades, UN report says - BBC News A global agreement in 1987 to ban chemicals harming the ozone layer is working, scientists say.LINK