Melting glaciers bring 1980s pollution revival

[Are_grits_groceries]

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Christian Bogdal and colleagues at the Swiss Federal Institute of Technology in Zurich studied levels of pollution in sediment at the bottom of the Oberaar lake in Bern, Switzerland.

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The flow of pollutants into the lake peaked in the 1970s, mainly due to the production of plastics, electronics, pesticides and fragrances. The levels declined during the 1980s and 1990s when people realised that these compounds were toxic and they were banned.

However, they found that banned chemicals, such as pesticides that have been linked with Parkinson's disease, have been pouring into the lake at an increasing rate since the 1990s.

http://www.newscientist.com/article/dn17956-melting-glaciers-bring-1980s-pollution-revival.html

What goes around, comes around.