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 Americans' 60-second science. I'm Karen Hopkins.

Neanderthal walks into a bar.

Bartender says why the long, forward-projecting face?

Well, according to a new study, it helped the Neanderthal air condition, the large volumes of oxygen,

he inhaled to support his active lifestyle.

The work appears in the proceedings of the Royal Society B.

The bartender appears in many, many jokes.

Neanderthals had a distinct facial appearance,

heavy brows, big noses, and a protruding upper jaw.

And scientists have long wondered why that configuration.

With the foreheads it appears, they inherited from their ancestors.

But the jutting midface, that was an evolutionary innovation all their own.

Some scientists say it's so they could use those prominent front teeth for some serious chomping.

Others say it gave their nasal passages the right size and shape to warm and moisten the cold, dry ice age air.

To put the theories to the test, researchers constructed a set of 3D simulations, of the skulls of

various humans. They included a Neanderthal and an earlier Hidalbergens, as well as a handful of

more modern noggins, males and females from Europe and Asia,

...