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.com.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 Jason Goldman.

It's hard to be a bird in our human-dominated world.

You can barely hear yourself sing, let alone hear the songs of your friends.

And you can forget about hearing a predator.

Noise is almost everywhere, especially noise from traffic. A whopping 83% of the surface of the continental US

is within just one kilometer of a road. Researchers have tried to assess the impacts of road noise

on animals by understandably looking at animals living near noisy roads.

The problem is that noisy roads are both noisy and, well, they're roads. It's hard to separate

the two. And so we figured out a way to have just the noise without any of the other effects

of a road. And to do that, we ran speakers through a forest where there was

no road. Chris McClure, a biologist at Boise State University and the Peregrine Fund. He and his team

built their audio phantom road at a popular stopover site for birds in Idaho as

they fly south for the winter. While the noise kept lots of birds away, some stuck around,

but they had trouble putting on enough weight to fuel the next leg of their migratory journey.

They have to fatten up, but they also have to not get eaten by a predator. And those two things are in conflict because to eat, they have to look down, which means they aren't looking at predators.

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