Silt from the heart of the United States flows down the Mississippi River to the ocean
Gerald Herbert/Associated Press/Alamy
The Mississippi River passes through New Orleans, Louisiana at an average speed of about 150,000 cubic meters per second, transporting more than 100 million tons of sediment from the central United States to the Gulf of Mexico each year. Standing along the coast of land made of such deposits, I watched the silt swirl brown in the river. The mud may be put to use immediately.
The construction team is not far away…
Source: www.newscientist.com
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