There are 200 million insects for each one of us. They are the most successful animal group ever - their key is an armoured covering that takes on almost any shape. Darwin's stag beetle fights in the tree tops with huge curved jaws. The camera flies with millions of monarch butterflies which migrate 2000 miles, navigating by the sun. Super-slow motion shows a bombardier beetle firing boiling liquid at enemies through a rotating nozzle and a honey bee army stings a raiding bear into submission, while grass cutter ants march like a Roman army, harvesting grass they cannot actually eat.

Originally released by BBC Worldwide Learning, 2009. Streaming video file encoded with permission for digital streaming by Infobase on November 21, 2019.