Sand mined near the river is shoveled into trucks in Pak Beng, Laos, a small town next to the Mekong River. This material relates to a paper that appeared in the Sept. 8, 2017, issue of Science, published by AAAS. The paper, by A. Torres at German Centre for Integrative Biodiversity Research (iDiv) in Leipzig, Germany, and colleagues was titled, "A looming tragedy of the sand commons."
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