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.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans' 60-second science. I'm Lee Billings.

You got a minute?

Lasers are the preferred weapons for interplanetary warfare and countless works of science fiction.

But they might actually be better at keeping the peace.

Because a new study finds that lasers offer an efficient, elegant way to conceal our planet, hiding us from any prying malevolent aliens throughout the cosmos.

Let's do it.

Let's click the earth.

David Kipping, a professor of astronomy at Columbia University, who came up with the idea

along with a graduate student, Alex Tici.

So why would a civilization want to hide?

Tici. So a lot of scientists, including

Stephen Hawking, has said that it actually might be dangerous for other civilizations out there

to know that we exist. If you look at the history of humanity, there have been cases where

two civilizations have come in contact for the first time. One of these civilizations

with a slightly

more advanced technology, and that group has ended up subjugating the other group. And so,

you know, something like that could happen on a planetary scale. Over the past two decades,

...