According to a new report from the United Nations, the ozone layer protecting the earth from ultraviolet rays is said to be healed from artificial damage.
Experts predict that the northern hemisphere could be fully repaired by the 2030s and holes in the South Pole will disappear by the 2060s.
The report, more than 30 years after the signing of the Montreal Protocol, has phased out chlorofluorocarbons (CFCs) and other ozone depleting substances.
"This presentation is good news for the environment and is proof of what global action can accomplish jointly," says Huffington Post.
How did this happen?
The dilution of Earth's shields was first observed in the 1970s. According to Nasa, in the worst case of the late 1990s, about 10% of the top ozone layer was depleted.
However, due to global efforts to remove CFCs used in aerosols and coolants, ozone has increased by 1-2% annually since 2000.
Paul Newman, a NASA scientist at the Goddard Space Flight Center, said, "It's really good news." We would have had a tremendous effect if the ozone depleting substances continued to increase. We stopped it. "
The Montreal Protocol is regarded as one of the most successful multilateral treaties in history and gives the opportunity to prevent 2 million skin cancer annually by 2030.
But research by Brian Toon at the University of Colorado has not yet been successful. "It has reached a point where recovery may have begun," he noted in an AP interview with a few areas of ozone that have not yet been repaired.
Another problem is that new technologies have increased the emissions of prohibited carbon credits in East Asian countries.
Newman agrees that there is still work to do. "I do not think I can knock victories until 2060," he said. "It is what our grandchildren should do."