S1·E17 – The Sound of a Mammoth

The islanders guide their mammoth herd through a large canyon in search of fresh pasture, but lose them in various pits, ravines, and crevices after a stampede. The islanders become confused by the echoes of the mammoths' calls, and require the Inventor to construct a device to bring them all back. Topics covered: echoes, sound waves, hearing, ear anatomy.