Russia oil leak: What is permafrost, and why does its thawing pose risk to the world?

News: The principal reason that led to the 20,000-tonne oil leak at an Arctic region power plant in Russia is being recognised is the sinking of ground surface due to permafrost thaw. Facts: Permafrost: It is a ground that remains completely frozen at 0 degrees Celsius or below for at least two years.It is defined… Continue reading Russia oil leak: What is permafrost, and why does its thawing pose risk to the world?