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 yawcult.co.

.j.p. 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 American 60 Second Science. I'm Eli Chen.

Got a minute?

How do you attract a mate?

If you're a male mouse, you take the Frank Sinatra approach.

And your cheeks so soft.

You sing.

Scientists have known about crooning male mice for years.

And past experiments show that if you leave male mice alone with an unconscious female

or even with just a trace of her urine, the males will sing.

If you reverse roles, the females do not sing.

So scientists believe that in courtship, males made all the noise until now.

The problem with the field is we've never had a way to figure out who's vocalizing.

Neuroscientist Josh Nunabelle at University of Delaware, he realized that researchers needed

better listening tools. So Nunabel built a mouse-sized recording studio.

His team lined a small closet with nylon mesh and foam, which absorb sound

rather than reflect it. And they installed ultrasonic microphones because mice make sounds at a frequency

that's above the range of human hearing. That's a mouse thing slowed down so we can hear it.

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