Permafrost locks in tons of mercury–until it thaws

The Arctic permafrost contains nearly twice as much mercury as all other soils, the ocean, and the atmosphere combined. The permafrost is thawing–potentially releasing large quantities of this neurotoxin into the environment. The Minamata Convention on Mercury–which came into force last year and which is intended to curtail mercury emissions from anthropogenic sources like coal-fired power plants, may prove to be almost irrelevant.

Read more