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Ozone layer | Description, Importance, & Facts | Britannica
Ozone layer, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules.
NASA Ozone Watch: Latest status of ozone
View the latest status of the ozone layer over the Antarctic, with a focus on the ozone hole. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone. Click any map image to bring up a new page with a high-resolution image.
Basic Ozone Layer Science - US EPA
Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
What Is Earth’s Ozone Layer and Why Is It Important?
This silent protector is Earth’s ozone layer—a thin band of gas that forms a shield around our planet, defending us from the Sun’s most dangerous rays. Without it, Earth as we know it would be a scorched and uninhabitable world.
Ozone Layer - National Geographic Society
The ozone layer is a thin part of Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light. "Ozone holes" are popular names for areas of damage to the ozone layer.
The Ozone Layer - Center for Science Education
In the stratosphere is the ozone layer, which keeps much of the harmful UV radiation from the Sun from reaching us on the surface.
The Ozone Layer Is Healing, But There’s a Hidden Catch
A hidden chemical leak may be quietly delaying the ozone layer’s comeback. The Montreal Protocol, signed in 1987, is widely considered one of the most effective environmental agreements ever implemented. It has driven a global phaseout of chemicals that once damaged the ozone layer and increased ...
Track the recovery of the ozone layer with updated data
The ozone layer plays a vital role in making the planet habitable for us and other species by absorbing most of the sun’s ultraviolet radiation. But, during the 1970s–90s, humans were emitting large quantities of substances that depleted the ozone layer.
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