This is a rebroadcast of one of our favorite episodes from Season 8!

When did smartness begin? We’ll find out how a neuroscientist blends up brains, and cracks the case of the Tyrannosaurus Rex smarts! Suzana Herculano-Houzel helps us answer listener Penny’s question by explaining how “smartness” might not mean what you think - and how all animals have shown off their intelligence over time.

Listen to our bonus interview with Suzana on our Patreon when you pledge just $1 a month or more! patreon.com/tumblepodcast.

Learn more about Suzana and her work on the evolution of intelligence on the blog on our website, www.sciencepodcastforkids.com.