Scientists discover enormous reserves of mercury in permafrost
Permafrost is a thick subsurface layer of soil that remains below freezing point throughout the year, occurring chiefly in polar regions.
Feb 06, 2018, 18:14 PM IST
Permafrost is a thick subsurface layer of soil that remains below freezing point throughout the year, occurring chiefly in polar regions.
Feb 06, 2018, 18:14 PM IST