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1 .This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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2 .The fragile layer of gas that protects all living things on Earth from the sun's harsh ultraviolet light is on the mend, in other words, the ozone hole is healing.
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3 .That's according to the latest assessment by the World Meteorological Organization and the United Nations Environment Programme.
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4 .The ozone hole had been growing for decades over Antarctica.
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5 .But the world recognized the problem and took action more than a quarter-century ago.
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6 .The 1987 Montreal Protocol phased out the use of chlorofluorocarbons, or CFCs, responsible.
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7 .With the ozone-damaging compounds gone, the layer had a chance to recover and the hole is no longer growing.
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8 .A bonus: the phase-out also helped slow global warming.
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9 .Because CFCs are also powerful greenhouse gases.
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10 .In fact, the agreement to address the ozone hole has actually cut five times as much the greenhouse gas emissions as has the Kyoto Protocol to address global warming.
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11 .The Montreal Protocol shows that the world can come together to deal with global environmental problems.
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12 .The protocol also illustrates that actions may require decades to yield results.
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13 .Which drives home the need to address our climate crisis now.
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14 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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