Temperature Record 101: How We Know What We Know about Climate Change

The video discusses the history and current state of global warming, highlighting the testimony of Jim Hansen in 1988 and the subsequent rise in Earth's temperature. It explains NASA's GISS temperature record, which tracks climate changes from 1880 to the present. The video details methods for verifying climate data, including collaboration with NOAA and satellite measurements. It identifies human activities, such as burning fossil fuels, as primary causes of climate change, and describes the effects on Earth's systems, including ocean warming and extreme weather. The video emphasizes the importance of understanding and mitigating climate change.

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