Protecting the Ozone Layer: The United Nations History

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The ozone layer — found on the lower portion of the stratosphere, approximately 20 to 30 km above Earth — helps protect living things from harmful ultraviolet rays from the sun. Concerns about its depletion and subsequent harmful radiation date back to the s.

More than 99 percent of ODS have been phased out by the Montreal Protocol over the last 30 years, and the ozone layer is on track to recovery by mid-century. Up to 2 million cases of skin cancer may be prevented globally each year by Skip to main content. Google Tag Manager.

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International Day for the Preservation of the Ozone Layer

The ozone layer, which is a shield of gas, protects the Earth against harmful rays from the sun. In doing so, it preserves life on our planet. It initiated with the Vienna Convention for the Protection of the Ozone Layer, which was signed by 28 countries on March 22, , which confirmed scientifically the depletion of the ozone layer.


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This protocol controls and measures global production and consumption of detrimental substances and structured around a few groups of ozone depleting chemicals. This treaty is very precise in that it sets a timetable for the phase out of production and consumption of over substances.

International Day for the Protection of the Ozone Layer 2015