At the end of the 1980s, the great damage to the ozone layer caused by human activity was already perceptible. At that time, international measures and agreements were established, the most important of them was the Montreal Protocol, in 1987, with the aim of reducing the effects of atmospheric pollution that caused this immense hole in a layer whose fundamental function is to protect the earth from the force of ultraviolet rays.
Three decades later, the United Nations published hopeful results. During this week, the head of the UN Environment Department, Erik Solheim, released a report with the findings of the latest monitoring in which it is indicated that the stratosphere has recovered much of the ozone lost in the second half of the twentieth century.
It is also estimated that by 2030, ozone will have recovered completely in the northern hemisphere of the planet, and by 2060 the hole in the layer that exists in the Antarctic will have been closed, a region where chlorine and bromine resulting from chlorofluorocarbon compounds from industrial emissions were mostly concentrated.