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Video: Keeping cool without killing the planet

We've had the delightful benefits of air conditioning and refrigeration for more than a hundred years now. In the early days, dangerous chemicals were used as refrigerants. Eventually, chlorofluorocarbons (CFCs) were developed.

dateJun 11, 2015 in Other
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Severe ozone depletion avoided

We are already reaping the rewards of the Montreal Protocol, with the ozone layer in much better shape than it would have been without the UN treaty, according to a new study in Nature Communications.

dateMay 26, 2015 in Earth Sciences
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Video: Earth's ozone layer

Several decades ago, chlorofluorocarbons (CFCs) were chemicals used in hairspray, deodorants, foam products, air conditioners and more. In 1974 chemists Sherwood Rowland and Mario Molina published a paper that indicated ...

dateApr 07, 2015 in Environment
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2014 Antarctic ozone hole holds steady

The Antarctic ozone hole reached its annual peak size on Sept. 11, according to scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The size of this year's hole was 24.1 million square kilometers ...

dateOct 30, 2014 in Earth Sciences
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