Part elegy, part ode, part investigative science journalism, Jonathan Thompson’s new book “River of Lost Souls: The Science, Politics, and Greed Behind the Gold King Mine Disaster” (Torrey House Press), tells the gripping story behind the 2015 Gold King Mine disaster that turned the Animas River in southwestern Colorado orange with sludge and toxic metals for more than 100 miles downstream, wreaking havoc on cities, farms, and the Navajo Nation along the way.