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 Yacult.

This is Scientific American's 60-second science. I'm Christopher Entagata. Got a minute?

There's nothing like that fresh, rain-washed air after a storm, right?

The idea has always been the rain is cleaning.

Mary Gellis, a chemist at Lawrence Berkeley Lab.

She and her colleagues study microscopic airborne particles.

So...

Normally, we don't collect during rain because our intuition is the air is clean.

Why would we be collecting right now?

Two years ago, they went against that intuition and collected after a rainstorm at a field in

northern Oklahoma.

And what they found was actually a wealth of particles,

about half a micron in diameter, nearly spherical, and glassy-looking under the microscope.

Lab analysis revealed the minuscule bits to be carbon-based blobs of soil material, like decayed bits

of plants and soil dwellers. But how they got airborne was a mystery. The researchers think that what's

happening based on a follow-up experiment goes something like this. The rain leads to puddles.

Organic matter leeches into those puddles, forming a film on top of the water. Then as raindrops

strike, they form tiny air bubbles. Those bubbles rise to the surface and burst through that layer of organic

...