U.N.: Depletion of ozone layer will be fixed in 40 years
The ozone layer is on track to recover in the next 40 years, the United Nations says
UN says ozone layer slowly healing, hole to mend by 2066
A stubborn La Nina and manmade warming are behind recent wild weather, scientists say
The 'triple-dip La Niña' explained – and how it affects the weather in your area