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 dot-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 Jason Goldman.

One of the most impressive scenes in the world of birds is a peacock displaying its impressive

iridescent feathers, technically known as its train.

While the female peahen looks on, the peacock spreads his train out and ruffles it back and

forth as the sun highlights

the red, blue, and green within the feathers.

But these iconic trains are only half the story of how the boys impress the ladies.

Both male and female peafowl sport crests on their heads,

small feathers that stick straight up like a mohawk.

The crest feathers that actually give the peacocks their Latin name.

They're called pavo Christodas, the crested pheasant.

And so I was intrigued by the fact that people didn't really know what the function

of these crests were.

Haverford College physicist Suzanne Kane.

A biologist might see those feathers and assume their visual signals.

...