Global Warming - Natural vs. Manmade Causes Compared By NASA | Video

Global Warming – Natural vs. Manmade Causes Compared By NASA | Video

Views:8526|Rating:3.21|View Time:2:56Minutes|Likes:63|Dislikes:35When you compare possible natural causes (orbital, solar and volcanic activity) over the course of the last 100+ years, to possible manmade causes (aerosols, deforestation and greenhouses gases), the winner is clear. Greenhouse gases directly correlate to an increase in Earth temperature. Credit: NASA/GSFC GISS

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