Singapore - Severe drought has caused water levels in the Mississippi River to drop so low that ships have been running aground. To keep commerce flowing, the U.S. Army Corps of Engineers is now using a dredge ship to push out silt in the river near Vicksburg, Mississippi. The chief of navigation for the corps told local media the low water level can cause a major financial impact.

It is just the latest in a growing number of disruptions hitting the

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