theme :Forest fires and the urgency to prevent the climate from warming to keep the methane accumulated in the tundra imprisoned in the frozen Polar Regions
theme : Problems of global warming in the Arctic country : the opening up of a sea passage for the oil tankers, the thawing of the permafrost, ...
theme : Global warming
theme : Flood
theme : The hole in the ozone layer
theme : The melting of the glaciers