Host Mo Rocca shows us 3D-printed statues of people and pets; the wrist swim inflator for water safety; how 100-year-old locomotives are kept running; and the sofa accessory that makes you feel like you're in the game.

Host Mo Rocca shows us the device pulling power from rivers; how scientists are 3D printing human body parts; the history of marketing presidential candidates; and the crazy warm coat filling made from bison fur.