This video provides an overview of changes happening in the Arctic.

This color-coded map displays a progression of changing five-year average global surface temperatures anomalies from 1880 through 2010. The final frame represents global temperature anomalies averaged from 2006 to 2010. The temperature anomalies are computed relative to the base period 1951-1980.

This static graph of changes in CO2 concentrations goes back 400,000 years, showing the dramatic spike in recent years.

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