The article points out that as the planet's temperature rises and the Arctic melts, it's releasing toxic chemicals, banned under the 2004 Stockholm Convention, including: pesticides DDT, lindane, chlordane, PCBs and fungicide hexachlorobenzene (HCB). These Pops, which can cause cancer and birth defects, have been locked in the frozen ice and cold water are now being released due to global warming.
This situation reminds me of what is being played out in the Arctic tundra as the permafrost is melting and greenhouse gases are being released into the atmosphere. These consequences of climate change are surfacing more and more as the global temperature continues to rise. A very sobering account on the impact of climate change.