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Are humans really Earth’s most dominant species? Let’s put all of the planet’s living things on a scale and see what has amassed the most mass. This week we break down the concept of “biomass” to judge Earth’s living things from top to bottom, and see how humans have changed the world.

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References:

Bar-On, Y. M., Phillips, R., & Milo, R. (2018). The biomass distribution on Earth. Proceedings of the National Academy of Sciences, 201711842.

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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Mara Johnson-Groh
Creative Director: David Schulte
Editor/animator: Karl Boettcher and Derek Borsheim
Producers: Stephanie Noone and Amanda Fox

Produced by PBS Digital Studios
Music via APM
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