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 yacolp.co.

That's Y-A-K-U-L-T.co.j-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.

Hundreds of millions of years from now, when humans are probably long gone, what sort of

geologic record will we leave behind for future archaeologists? Plastics? Sure. Concrete, maybe.

How about... A tasty tender chicken. Good chicken. Ooh, chicken.

Yeah, chicken. Humanity consumes some 66 billion birds a year.

That's billion with a bee.

The mass of chickens on the earth is so big, it beats the mass of all other birds combined.

The numbers are astonishing.

Richard Thomas is an archaeologist at the University of

Lester, who writes with his colleagues in the journal Royal Society Open Science that chicken bones

could be a unique signifier of our era, known as the Anthropocene. Thomas says our chicken

industrial complex can be traced back to a program in the late 1940s, known as the Chicken of Tomorrow program.

Yes, indeed. Chickens and eggs are a big business. And like big business, there's a serious effort

to improve the product. A three-year program to breed a better chicken is now being carried on.

They came up with this fast-growing meat chicken.

Then, in the decades to come, selective breeding, gene editing, antibiotics, and new

types of feed and housing helped maximize chickens' weight gain even more.

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