NASA Explorers: Permafrost Gallery NASA Explorers: Permafrost Arctic, Greenhouse Gases, Methane (CH4), Permafrost, Soils NASA Explorers: Permafrost NASA Explorers head back in time…by going underground. By CLIMATE STATE|2018-12-08T18:37:48+01:00December 8, 2018|Categories: Arctic, Greenhouse Gases, Methane (CH4), Permafrost, Soils|Tags: 2018, Carbon Dioxide, Deglaciation, Methane, NASA, Permafrost, Science|0 Comments Read More