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 American 60-second science. I'm Annie Sneed. Coral reefs are among the most

productive ecosystems in the world. They're also in serious danger. Climate change and other

threats are killing them off. But researchers have come up with an invention they think could

help the reefs. 3D-printed corals.

At the heart of reef ecosystems lies the symbiosis between corals and algae.

Coles use light. They're photosynthesizing, so they have microscopic algae inside the tissues,

and these use light to generate energy and that energy is then transferred

to the coral animal host and that the animal host in return transfer certain byproducts to

the algae and so they have a symbiosis going on. Daniel Wang Persert, a coral reef scientist at the University of Cambridge.

This tight-knit bond between algae and corals is what makes reefs so incredibly productive.

And because of the symbiosis, corals have involved sophisticated skeletal and tissue structures for collecting

sunlight. So usually you would have this kind of rapid light attenuation, but through the

skeleton, light is kind of pumped and guided into deeper, otherwise shaded areas. So there's

lots of tricks that colds use, and in our work we copied some of them.

Wang Presert and his colleagues imaged corals to analyze their skeletal and tissue makeup.

They then used a 3D bioprinter to build an intricate structure that mimics real corals.

The printed corals were made of biomaterials like cellulose and had algae

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