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The ozone layer is not healing as scientists had hoped

ozone layer is still thinning in more populated parts of the world

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robert99 robert99 Sweden Posts: 1360
1 7 Feb 2018
http://www.smh.com.au/environment/climate-change/we-might-be-entering-the-age-of-the-unfailing-sunburn-ozone-layer-getting-worse-in-populated-areas-20180206-p4yzil.html

The ozone layer is not healing as scientists had hoped. In fact, depressing research released on Tuesday finds our UV-blocking ozone layer is still thinning in more populated parts of the world.

A global effort to cut certain airborne pollutants over the last three decades has been credited with allowing our damaged ozone layer to recover. But the shock new findings – which scientists cannot explain – suggest we may have been celebrating too early.

"This study is scary,” said Professor Bill Laurance, a climate change scientist at James Cook University.

“Until we understand what’s really happening you’d be silly to sun yourself, except in polar regions. The era of suntanning could be over; we might be entering the age of the unfailing sunburn."

The ozone layer is crucial to life on Earth. It blocks the sun’s most damaging rays, preventing them from damaging our DNA.

In the ‘70s, we discovered that chlorofluorocarbons – a type of gas used in fridges and aerosol sprays – were destroying the ozone layer, leading to a large hole forming over the Antarctic.

Humanity responded to the crisis, signing the Montreal Protocol in 1987 and phasing out chlorofluorocarbons.

It was the world’s first universal agreement to cooperate on human health, according to University of Melbourne sustainability expert Dr Paul Read, and heralded huge optimism about how we would respond to other worldwide challenges, such as global warming.
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