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 American's 60-second science.

I'm Christopher in Taguata.

Restaurants, schools, dentist office, they're all keeping more windows open to increase ventilation

and hopefully decrease the chances of encountering the coronavirus. But letting in fresh air also

lets in more noise. Now researchers have come up with a device that's like noise-canceling

headphones, but for a building. It works on the same principle, so it detects noise that's coming

into the windows and then it's cancelling the noise. Bon Lam, an acoustical engineer at Nanyang

Technological University in Singapore. The device looks like a grid of small speakers and fits over an open

window. A microphone samples incoming noise and then sends the speaker grid instructions on what sort of

anti-noise to emit. The result is to cancel out the incoming sound. For example, here's the sound

of a commuter train in Singapore with no noise control.

And now here's that same sound with the array of noise-canceling speakers turned on.

Compare that to a closed window.

The anti-noise device is almost as good, and it allows air to keep flowing into and out of the window.

The details are in the journal Scientific Reports.

The device is just a prototype, so it's still expensive, and it doesn't block out all sounds.

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