"The Arctic will retain its power to amaze for a long time. Yet it is now changing beyond the usual regional and annual variations in sea-ice formation, glacier melt and so forth. The Arctic is clearly melting. Its floating ice cap is shrinking and thinning and its glaciers are retreating. By the end of this century, maybe much sooner, there will be frequent Arctic summers with almost no sea...
What is Global Warming?
"Scientists know more than ever before about how the Earth's climate is changing and what that will mean for people, habitats and wildlife across the planet.
The evidence shows that human activities--like burning fossil fuels like coal, oil and gas--are most likely responsible for the warming observed to date. And, the trend is clear. If we don't take steps to curb global warming pollution, the impacts will become increasingly dire."
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