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And you thought DDT was a thing of the past...

Although worldwide use of DDT has decreased from 40,000 tons per year in 1980 to 1,000 tons per year today, with the U.S. banning most uses in 1972, DDT is still showing up in the Antarctic. Spurred by global warming, previously frozen insecticide particles are being released through glacier meltdown.

Ocean water dissolving the shells of marine life? Sounds like the plot of a science fiction movie, but for many shelled marine organisms it's a reality due to anthropogenic emissions of carbon dioxide. With the atmospheric concentration of carbon dioxide at its highest point in the last 650,000 years, the oceans are becoming more acidic as the water turns carbon dioxide into carbonic acid.