Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yacolp.co.j.j.

That's y-A-K-U-L-T.C-O.J-P.

When it comes to a guide for your gut, count on Yacolt.

This is Scientific Americans' 60 Second Science.

I'm Karen Hopkins. This will just take a minute.

Got your attention? I thought so. But what is it about a piercing shriek that really turns our heads?

It's what it does to our brains. The acoustical properties of the human scream poke at the neural circuits that control fear. That's according to a

study in the journal Current Biology. Our every waking moment is filled with noise, from planes flying

overhead to various creatures scrambling underfoot. But a heartfelt cry can cut through all that.

So what's so special about the sound of a screech? To find out,

researchers prepared a sampler of screams from YouTube videos, popular films, and excited

volunteers. If that screech sounded familiar, that's because it's the famous Wilhelm

scream, a stock sound effect heard in everything from Bugs Bunny to Star Wars. The scientists analyzed the acoustical characteristics of the various screams,

and they found that these alarming sounds are not only loud, they're particularly rough.

That is, they rapidly change in frequency.

Normal speech is relatively smooth,

with frequencies ranging only between 4 and 5 hertz or cycles per second,

but a shriek can swiftly fluctuate between 4 and 5 hertz, or cycles per second, but a shriek can swiftly

fluctuate between 30 and 150 hertz, a range that can make your hair stand on end. When the

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