Image Gallery - What Changes Climate?
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Graph of temperatures and CO2 concentrations for the past 800,000 years
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Graph of temperatures and CO2 concentrations for the past 800,000 years (not including today's values)
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Horse-drawn
wagons and carriages, an electric trolley car, and pedestrians congest
a cobblestone Philadelphia street in 1897 - National Archives (513362)
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Map of Scandinavia, showing location of Stockholm and ice from previous ice age
