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 Yachtold, visit yacult.co.j.p.

That's y-A-K-U-L-T-C-O-J-P.

When it comes to a guide for your gut, count on Yacolt.

Happy Monday listeners.

For Scientific American Science Quickly, this is Rachel Feldman.

First, I just want to say that I believe radical optimism is going to be an important part of our toolkit in the months to come.

So I'm going to do my best to bring you stories that show how innovation can help change the world for the better. We're going to keep introducing you to brilliant

people who are working to solve problems that seem insurmountable. We're going to keep taking

you to places you've never been to learn things that broaden your horizons and offer you new ways

of seeing the world. We're also going to try to provide you with some joy and levity

and that indescribable, wow, gee whiz, feeling as often as we can

because we know that that's so important.

Okay, so let's kick off the week by catching up on some of the latest science news.

The world's first wooden satellite arrived at the International Space Station last Tuesday.

The Japanese spacecraft is just four inches square.

As I've mentioned before on science quickly, the rapidly growing number of metal satellites

in orbit pose a real threat to our planet's ozone layer.

That's because spacecraft, being mostly of

aluminum, produce hazardous aluminum oxide when they burn up in the atmosphere, which is an inevitable

...