Scientists in Wyoming have recently discovered the longest mule deer migration route that’s ever been recorded. The animals travel 150 miles, from the Red Desert to the Hoback Basin. Wyoming Public Radio’s Willow Belden spoke with Hall Sawyer and Joe Riis, who have been documenting the migration. Sawyer is a research biologist at Western Ecosystems Technology, and Riis is a wildlife photographer. Sawyer says he discovered the migration route kind of by accident.