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Unexplainable

Diary of a teenage brain, part 2

Unexplainable

Vox

Life Sciences, Science, Natural Sciences

4.62.4K Ratings

🗓️ 10 December 2025

⏱️ 30 minutes

🧾️ Download transcript

Summary

As our brains develop throughout our childhood and teens, they form connections and then prune back the ones that aren't used. What can we learn from them? Guests: Alison Barth, professor in the life sciences at Carnegie Mellon University; Saket Navlakha, associate professor at Cold Spring Harbor Laboratory This series was made possible by support from the Annie E. Casey Foundation. Vox had full discretion over the content of this reporting. For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/unxtranscripts⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/unexplainable⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠⁠unexplainable@vox.com⁠⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠vox.com/members⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript

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0:00.0

Support for the show comes from the Audible original The Downloaded 2, Ghosts in the Machine.

0:06.0

Earth's final days are near, and the clock is ticking for members of the Phoenix colony.

0:11.0

All they need to do is upload their minds back into the quantum computer.

0:15.0

Simple enough, but their plan is disrupted by digital duplicates of their own minds

0:20.0

that could destroy their stored

0:21.7

consciousness forever. Listen to Oscar winner Brendan Fraser reprised his role as Roscoe Cadulian

0:27.7

in this follow-up to the audible hit sci-fi thriller The Downloaded by Canada's most

0:32.4

decorated sci-fi author Robert J. Sawyer. What are you willing to lose to save the ones you love?

0:38.5

Find out in the thought-provoking sequel that downloaded two, Ghosts in the Machine.

0:42.5

Available now, only from Audible.

0:47.8

Introducing the redesigned Dell PC with the Intel Corps Ultra processor.

0:51.9

It helps you handle a lot.

0:53.4

Even when your holiday to-do lists get to be a lot.

0:56.5

Like organising your holiday shopping and responding to holiday requests and customer questions

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and customers requesting custom things, plus planning the perfect holiday dinner for vegans, vegetarians and Uncle Mike's carnival diet.

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Luckily the Dell PC helps you handle a lot.

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Get yours at Dell.co.org.

1:16.6

If you picture yourself as a little baby, right, you are born with billions of neurons booping around in your head.

1:29.3

But in order for those neurons to do much of anything, they have to connect to each other

1:34.7

so they can transfer signals across the brain.

...

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