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Climate Change Over the last 150 years, the global temperature has risen more than 1.5°F, and has risen the most dramatically over the last few decades. Natural variations, such as the earth’s orbit, volcanic activity, and solar activity, have caused climate change in the past. However, evidence indicates that these recent changes are driven largely by human activities, that these changes are occurring rapidly, and are predicted to continue and increase in the future from our past and continued emissions from fossil fuel burning. Play the "movie" below to learn the basic principles of the greenhouse effect and how it is amplified by human activities, such as burning of fossil fuels, that put more heat trapping gases in the atmosphere. Learn More:
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