Before it reaches the sea, the Mekong River travels more than 2,500 miles through Tibet, China, Burma, Thailand, Laos, Cambodia and Vietnam. It is estimated that more than 60 million people depend on the river in some way.
Chile's salmon industry is worth $2 billion and the fish are one of the country's top four exports. Chile is the biggest supplier of salmon to the U.S. and second to the world.