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.

.jp. 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's 60-second science. I'm Christopher in Taliatta.

To learn about the plant life of long ago, scientists dig through layers of the earth,

looking for fossil clues, like bits of fossilized pollen or spores.

And that's where I come in.

Timo Van Eldyke is an evolutionary biologist at Utrecht University, and he was called into action

when his pollen hunting pals noticed something altogether different. In a sample of sediment

more than 200 million years old, dug from 1,000 feet below the surface of Germany, they found

bits of insect. I took a human nose hair because that's the way you isolate these things.

You have a needle tipped with a human nose hair.

Apparently it has just the right springiness for the isolation.

Whose nose hair was it?

Yeah, I don't actually know.

That was a joke going around.

That's one of the professors, but we don't know.

So, using someone's nose hair, Van Eldike picked through the sludgy sediment and isolated the tiny scales of moth wings.

That's the stuff that looks like dust if you touch a butterfly or moth.

His team scanned the scales with an electron microscope, and they made a crucial discovery.

...