Once upon a time (around 300 million years ago), Earth was home to massive dragonfly-like insects and two meter long millipede-like creatures. Why did they die off?
Guests: <a href="https://www.up.ac.za/research-matters/researcher/edward-snelling">Ned Snelling</a>, professor of experimental physiology at the University of Pretoria; <a href="https://search.asu.edu/profile/43633">Jon Harrison</a>, professor of environmental physiology at Arizona State University
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