By Michael Graham Richard, Source: Treehugger

Mercury levels in the upper layers of the ocean are up 3.4x since the beginning of the industrial revolution, according to the first study to have done truly global measurements of marine mercury levels by taking thousands of samples around the world over half a decade. Unsurprisingly, humans are to blame for this alarming rise in neurotoxic pollution, with the highest concentrations to be found in the Arctic and North Atlantic oceans.

The primary culprits are the usual suspects: Burning fossil fuels, especially coal, and the mining industry.

Read more at: Treehugger