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IThis type of biological rhythm lasts for longer than a day In humans an example is the menstrual cycle in females, but in other animals can include migration or hibernation patterns.

Story by Amy Ellis

I caught up with Ruben to find out just what makes him a scientist unlike any other. His passion lies in teaching people about the wide world of science. But it hasn't always been that way. In fact, a large proportion of his science research now involves chemistry, but up until 10 years ago, he had never studied chemistry ever... he hated it!

Ruben is an Australian scientist, educator, author, and public speaker. He has appeared on Australian television shows to educate the public on science topics. Ruben performs science demonstrations for school children. He is currently working on research into weight loss and focusing on what happens to fat after weight loss.