is melting at unprecedented rates. Permafrost acts like a natural freezer, preserving not just organic material but also dangerous substances like mercury. The permafrost in the Arctic has ...

Mercury is toxic to both humans and animals ... to global warming has been the highest in the world, land ice is now melting. This means that metals and environmental pollutants stored in snow ...

Permafrost covers about 25% of the exposed land surface in the Northern Hemisphere, crucial in locking away carbon and toxic metals like mercury.