Dr. Biology pops into the laboratory of biologist Jon Harrison to see what's happening with his giant beetles. It's not long before he gets a lesson on how insects breathe differently than humans. He also takes a quick journey back 300 million years - when these crawling and flying animals were super-sized. You can see one of these modern day creatures exercising on a cool beetle flightmill. Later you can learn about the math the scientists use to calculate how far and fast they fly.

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