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.

Yachtold 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 yacolp.co.

.jp. That's Y-A-K-U-L-T.C-O.JP. When it comes to a guide for your gut, count on Yacolt.

Hi, and welcome to CO quickly, a scientific American podcast series. This is your fast track update on the COVID pandemic.

We bring you up to speed on the science behind the most urgent questions about the virus and the disease.

We demystify the research and help you

understand what it really means. I'm Tanya Lewis. I'm Josh Fishman. We're a scientific American's

senior health editors. Today we're going to talk about reducing infections by improving indoor

air quality. And how a lot of people approve of masks on planes and other precautions despite what you see on the news.

You and I talk a lot about how COVID spreads through the air and the importance of masks.

But when it comes to stopping airborne infections, there's a longer-term solution that doesn't require a filter across your face, isn't there?

Absolutely. It's time we started improving the quality of the air inside our buildings.

We spend 90% of our time indoors, but we devote very little effort to making that air healthy

for human beings. As Lindsay Marr, an aerosol expert at Virginia Tech, put it,

we don't rely on people to filter their water individually.

We provide clean, safe drinking water. Good point. Why don't we care as much about indoor air?

It's not like we just realize that breathing is important for health. It's more of a recent

building design issue. In the last 40 years or so, we started sealing things up more in the name of energy efficiency.

But though tighter seals reduce AC or heating bills, they also make it easier for the virus that

causes COVID and other germs to accumulate in the air, making us sick.

...