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Mysterious source of ozone-depleting chemical baffles NASA

A chemical used in dry cleaning and fire extinguishers may have been phased out in recent years.

Mysterious source of ozone-depleting chemical baffles NASA
Ozone pact helped cool the planet: study

A slowdown in global warming that climate sceptics cite in favour of their cause was partly induced by one of the world's most successful environment treaties, a study said on Sunday.

Ozone pact helped cool the planet: study
A false-color view of total ozone over the Antarctic pole. ©REUTERS
Ozone hole over Antarctic second smallest in two decades

The seasonal hole in the ozone layer above the Antarctic this year was the second smallest in two decades, but still covered an area roughly the size of North America, US experts said Wednesday.

Ozone hole over Antarctic second smallest in two decades

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