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.

.jp. 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 American's 60-second science. I'm Christopher in Taliatta.

For 4,500 years, the Great Pyramid, or Kufu's Pyramid, has kept watch over the Egyptian desert.

In that time, it's suffered the indignities of tomb raiders and gunpowder-toating archaeologists

a la Indiana Jones. But the latest investigation of the pyramid's mysteries

is far more sophisticated, and it takes a page from particle physics. Scientists use muons,

a byproduct of the cosmic rays constantly raining down on our planet to image the interior

of the pyramid. The particles interact differently with stone than with empty space. And that fact

led the scientists to discover a previously unknown, 100-foot-long void, sitting somewhere above

the pyramid's grand gallery. The good news is the void is there. The other good news is that

this void is very big. Now what is it? We need the help of the people.i Taiyubi of the Heritage Innovation Preservation Institute and an author of a paper detailing

the findings in the journal Nature. Maybe Egyptologists and specialists in ancient Egyptian

architecture will provide us with some hypotheses that we can use for simulation and to compare with the data that we have to try to find

a kind of architectural explanation for this voice.

Until then, the newly discovered space will be just one of many enduring mysteries of this

very old wonder of the world.

Thanks for listening.

For Scientific American 60 Second Science, I'm Christopher in Daliatta.

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