Are Alaska’s wildfires accelerating global warming?

Alaska Dispatch: The natural presence of certain gases like carbon dioxide in the air helps keep the Earth warm enough for life to exist. Solar radiation warms the planet, and these gases slow the loss of that heat back into space. They act somewhat like glass in a greenhouse, hence the nickname. In the past, when the level of CO2 rose -- maybe due to vast rotting swamps or volcanic action -- the climate grew warmer. Sometimes much, much warmer. And when CO2 levels plunged? Can you say ‘Ice age'? After thousands......

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