Studies of the state of the environment in recent years indicate one thing: our civilization is steadily moving towards environmental disaster. And yet, in a recent UN report, despite the persistence of this trend, some positive shifts are noted. These include, in particular, the results of global efforts to restore the ozone layer, which protects our planet from harmful ultraviolet radiation.
Every four years, an international team of researchers prepares a report on the state of the Earth's ozone layer. Unfortunately, over the decades, under the influence of millions of tons of chlorofluorocarbons (CFCs) emitted into the atmosphere, it has been depleted at an alarming rate, which inevitably threatens our planet with catastrophic consequences.
Everything changed in September 1987, when the international Montreal Protocol was signed, which entered into force in early 1989 and was ratified by 196 states. His main idea is to stop using chlorofluorocarbons, the release of which has been completely banned since 2010.
The first positive results were noted already in 2000. During the first decade, the ozone content in the atmosphere increased by 1–3%. Based on current projections, the ozone layer will fully recover over the Earth's Northern Hemisphere by 2030, over the South by 2050, and over the polar regions by 2060.
However, not all problems have been resolved. Environmentalists have a lot of complaints about China. An addendum to the Montreal Protocol, the Kigali Amendment, is currently under development, which will ban the use of hydrofluorocarbons. If it is approved, then the process of global warming, according to experts, will be able to slow down by 0.4%.