In August 2012, soon after returning from his visit to Russia, the elder Tsarnaev created a YouTube channel with links to a number of videos.

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In August 2012, soon after returning from a long visit to Russia, the older Tsarnaev created a YouTube channel with links to a number of videos.

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In 2002 the Army Corps of Engineers (ACE) installed a series of electric barriers 37 miles downriver in the Chicago Sanitary and Ship Canal, an artificial channel that links the lakes with the Mississippi and its tributaries.

ECONOMIST: The Great Lakes