Around 30 years ago, scientists found a massive and growing hole in the ozone layer. How’s it doing today?
“When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen. A freed oxygen atom then combines with another oxygen molecule to form a molecule of ozone.”
Ozone layer on the mend, thanks to chemical ban
“The Antarctic ozone hole has been a potent symbol of humankind’s ability to cause unintended environmental harm. But now comes a glimmer of good news: The void in the ozone layer is shrinking. ‘It’s a big surprise,’ says Susan Solomon, an atmospheric chemist at the Massachusetts Institute of Technology in Cambridge. ‘I didn’t think it would be this early.'”
Ozone Hole Watch
“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.”
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