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[Exploring Planet Nine, the Evolution of Human Intelligence, and the Science of Gratitude]-[The Search For Planet 9 And Our Sushi-Powered Brains]

Wow in the World · B1 · 2017-05-15

Preschool Enlightenment
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📋 Summary

The Hunt for the Mysterious Planet Nine

In this episode of Wow in the World, hosts Mindy Thomas and Guy Raz embark on a quest to explore the outer reaches of our solar system. The conversation centers on the elusive "Planet Nine" (or Planet X). Astronomers, including Professor Mike Brown from Caltech, hypothesize that this massive body—estimated to be 10 to 15 times the size of Earth—exists beyond Neptune. Because it is so distant from the sun, it remains shrouded in darkness. Guy Raz explains that it takes roughly 20,000 Earth years for this planet to complete a single orbit, making birthday celebrations quite rare! To aid in this discovery, the hosts encourage listeners to visit zooniverse.org, where citizen scientists can use the "Wide Field Infrared Survey Explorer Telescope" data to help scan for this hidden world.

Seaweed and the Evolution of the Human Brain

Transitioning from astronomy to anthropology, the hosts delve into what distinguishes Homo sapiens from other species. While humans share common origins in Eastern Africa dating back 220,000 years, our unique cognitive abilities—such as complex language, future planning, and imagination—are rooted in our biological development. Guy Raz highlights the role of the "cerebral cortex," the part of the brain packed with neurons that facilitate higher-order thinking.

One compelling scientific theory suggests that our ancestors' consumption of seaweed was a catalyst for this brain growth. About 2.5 million years ago, as early humans migrated to coastal areas, they began consuming marine life. Seaweed, being "chock full of nutrients" like iodine, taurine, zinc, magnesium, and vitamin B12, provided the essential building blocks for brain development. These nutrients, particularly zinc and magnesium, are vital for learning, memory, and cognitive processing, suggesting that our modern intelligence may be partially owed to the dietary habits of our beach-dwelling ancestors.

The Mental Workout of Gratitude

Finally, the episode introduces a surprising form of "exercise": the practice of gratitude. Mindy demonstrates that gratitude is not just an emotion but a "mental exercise" that yields tangible health benefits. Citing research from professors at the University of Montana, the hosts explain that individuals who regularly express appreciation are often happier, more optimistic, and physically healthier. This habit of showing gratitude—thanking those who contribute to our lives—can actually lower the risk of illness and increase motivation for physical activities. The episode concludes with a playful, practical demonstration of this "workout," emphasizing that taking a moment to appreciate the people around us is a vital component of a well-lived, "wow-worthy" life.

🎯Key Sentences

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It's going to be a November to remember.
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last night I could hardly even sleep because I was too pumped up
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This is a disaster.
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It's got to be somewhere, because everything's somewhere, right?
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I thought I'd start in a more obvious place.
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📝Key Phrases

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music to your ears
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get on with the show
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pumped up
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around here somewhere
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pitch in
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📖 Transcript

Grownups, Wondery Plus subscribers can listen to Wow in the World early and ad-free right now.
Join Wondery Plus in the Wondery app or Wondery Kids Plus on Apple Podcasts.
Hey, Wowzer fans, Mindy here.
And before we start the show, I got to let you know that this November, with a special new episode featuring our friends at Circle Round and Terrestrials on Radiolab for Kids,
And don't miss when Elmo from Sesame Street stops by Wow in the World to make us all belly laugh on November 24th.
Oh, but that's not all, Reg.

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