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Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.

I'm Cody Goff.

And I'm Ashley Hamer.

Today you learn about why scientists measured how hard babies kick in the womb

and the difference in brain scans between people when they were reading a book versus listening to a podcast.

We'll also answer a listener question about the history of fart

humor. Let's clear the air on some curiosity. In a study that's the first of

its kind, scientists have figured out how hard babies kick when they're in the womb.

And the force of a fetal kick is more than a fun fact.

It's also a way to figure out if a fetus is developing properly.

Scientists have known for a while that those little kicks are important for well-formed

bones and joints because pregnancies with too little movement tend to be associated with skeletal

abnormalities like scoliosis, which is why researchers set out to answer the question,

how much movement is the right amount? For a January 2018 study,

a team of scientists gathered hundreds of fetal scans performed with a technology known as C-I-N-E-E, like cinema,

which records both internal features and movement.

From those scans, they chose 20 that depicted a full-blown kick.

They also collected a half dozen traditional MRI scans captured during different periods of gestation,

20 weeks, 30 weeks, and 35 weeks, to help them analyze bone development.

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