Via a complicated cascade of effects, a full recovery of the
ozone hole over
After years of decline, the springtime concentrations of
ozone in the atmosphere high over
Stratospheric ozone blocks much of the sun’s ultraviolet radiation that would otherwise reach Earth’s surface and boost rates of skin cancer.
In one sense, however, the ozone hole is somewhat
beneficial: It has kept Antarctica cooler than it otherwise would have been,
says Seok-Woo Son, an atmospheric scientist at
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