Earth’s Future Climate (1986)

This presentation discusses the complex carbon dioxide (CO2) cycle and its significant influence on Earth’s climate. Dr. James Casting from NASA explains how CO2 levels have changed throughout Earth’s history, particularly due to fossil fuel combustion, leading to concerns about an enhanced greenhouse effect and rising global temperatures. He outlines natural mechanisms that control CO2 levels over long geological time scales, including the rock cycle and its relationship with oceanic processes. The presentation also compares Earth’s climate with those of Mars and Venus, emphasizing the importance of CO2 in maintaining climate stability. The future implications of rising CO2 levels are highlighted, indicating potential severe environmental and economic consequences.

Keywords
carbon dioxide, greenhouse effect, climate change, fossil fuels, NASA, geological time scales, rock cycle, ocean processes, environmental impact, future predictions

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