To find a viable sample of mammoth DNA, Josh Gates retrieves bone samples from the massive Batagay crater, then journeys far upriver to a site in the lawless Siberian wilderness where tusk hunters carve out troves of bones from the permafrost. He tak... (more)es the DNA samples back to the lab and watches the process of treating and testing the specimens. At long last, he views the DNA results to find out if the woolly mammoth will walk the earth again.