Finally some good news from the environment.
The ozone layer – which protects us from the sun’s harmful radiation – is slowly healing.
Over the northern half of the world, the layer should be completely repaired by the 2030s, the report said. The good news is due to decades of worldwide cooperation to phase out ozone-depleting chemicals.
If ozone-depleting substances had continued to increase, we would have seen huge effects. We stopped that. If nothing had been done to stop the thinning, the world would have destroyed two-thirds of its ozone layer by 2065, he said.
The infamous ozone hole over Antarctica is also recovering, although it will continue to occur each year until the 2060s. (Ozone will take longer to heal in the southern half of the world.)
The ozone layer is located up in the stratosphere some 7 to 25 miles above Earth’s surface, according to NASA. It acts like sunscreen, shielding the planet from ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and damage plants.
The naturally occurring ozone high up in the atmosphere is the “good” ozone and is in contrast to the “bad” ozone near the surface, which is man-made pollution that can cause respiratory problems.
Scientists say the way humanity tackled the ozone problem also provides a template for how we can counteract human-caused global warming.
The Kigali Amendment calls for slashing the future use of powerful climate-warming gases known as hydrofluorocarbons (HFCs) in refrigerators, air conditioners and cars.
“Carbon dioxide emissions remain by far the most important greenhouse gases which are driving global warming,” said World Meteorological Organization Secretary-General Petteri Taalas. “But we can also help tackle climate change by reducing our commitment to other gases, including HFCs. Every bit of warming matters,” he said.