Enhanced levels of carbon dioxide are likely cause of global dryland greening, study says

ScienceDaily: Enhanced levels of atmospheric carbon dioxide are a likely key driver of global dryland greening, according to a paper published in the journal Scientific Reports. The positive trend in vegetation greenness has been observed through satellite images, but the reasons for it had been unclear. After analyzing 45 studies from eight countries, Lixin Wang, assistant professor of earth sciences in the School of Science at Indiana University-Purdue University Indianapolis, and a Ph.D. student in Wang's......

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