Host Mo Rocca shows us: the reinventing of the wheel; a backpack that floats on your back; creating plastic from fish scales; and, a look at how the Wright brothers solved the problem of flight.

Host Mo Rocca shows us the device to quickly teach you how to play guitar; the robotic lawn mower that cuts your grass on its own; replacing tissue with a cloth handkerchief dispenser; and, the genius of Nikola Tesla.