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Mending Ozone Hole May Worsen Climate Change

from Scientific American

Decades of chemical pollution have damaged the ozone layer of the upper atmosphere that shields Earth from the harmful effects of the sun's ultraviolet rays, each summer eating a hole over the South Pole that expands to nearly the size of Antarctica.

But since 1996, when an international treaty banned the culprit chemical refrigerants and propellants ... , the size of the seasonal tear has been shrinking - and scientists predict it may stop forming by the end of this century.

You would think that was good news. But atmospheric scientists caution in a new study published in Science that sewing up the rift in the ozone ... layer may exacerbate another environmental woe: climate change.

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PODCASTS: From Balloons to Space Stations: Studying Cosmic Rays

CREAM Inflating

Cosmic rays have mysterious qualities about them that scientists continue to research in order to better understand their origins and composition. Dr. Eun-Suk Seo, a professor of physics at the University of Maryland, and her colleagues, fly enormous balloons as large as a football stadium and a volume of 40-million-cubic feet for extended periods over Antarctica to study particles coming from cosmic rays before they break up in the atmosphere.

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