Could Sprinkling Dust In The Stratosphere Curb Global Warming?
Harvard scientists with funding from Bill Gates think that releasing dust into the stratosphere could counter global warming.
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What is the Great Green Wall of China?
Dear EarthTalk: What is the Great Green Wall of China? —Jacob Williston, Tempe, AZ Unlike the Great Wall of China, a 5,000-mile fortification dating back to the 7th century BC that separates northern China from the Mongolian steppe, the Great Green Wall of China — otherwise known as the Three-North Shelter Forest Program — […]