The ozone layer or ozone shield refers to a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations ...
Welcome to EPA's ozone layer protection web area. The ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation.
Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% in the total amount of ozone in Earth's ...
What is the ozone layer? The ozone layer is a deep layer in the stratosphere, encircling the Earth, that has large amounts of ozone in it. The layer shields the ...
The Ozone Layer. The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone (O3).
The ozone layer is a belt of naturally occurring ozone gas that sits 9.3 to 18.6 miles (15 to 30 kilometers) above Earth and serves as a shield from the harmful ...
The ozone layer is the part of the Earth's atmosphere which contains relatively high concentrations of ozone (O3). "Relatively high" means a few parts per million ...
The earth's stratospheric ozone layer plays a critical role in absorbing ultraviolet radiation emitted by the sun. In the last thirty years, it has been discovered ...
Stratospheric Ozone The stratosphere, or "good" ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV ...
Science: Ozone Basics. Ozone is very rare in our atmosphere, averaging about three molecules of ozone for every 10 million air molecules.