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Recovery of ozone layer expected to take at least 40 years

This year marks the 25th anniversary of the Montreal Protocol on Substances that Deplete the Ozone Layer, which was signed on Sept. 16, 1987. It has succeeded in cutting the production and consumption of ozone-destroying chemicals, which have a long atmospheric lifetime and it will take several decades before their concentrations are back to pre-1980 … Continue reading Recovery of ozone layer expected to take at least 40 years

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Greenland’s massive ice sheet melts

» By Chris Rose As the world’s media attention turned this week to the Summer Olympics in London, a somewhat downplayed story of astonishing implications was emerging from the world’s biggest island: almost 97% of Greenland’s ice sheet experienced melting during early to mid-July. In a normal summer period, according to the National Aeronautics and … Continue reading Greenland’s massive ice sheet melts

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