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's 60-second science. I'm Christopher in Talata. Got a minute?

Anyone who's gone snorkeling at a coral reef lately may have been discouraged from slathering on too much sunscreen.

In some places, the non-biodegradable skin protection is actually banned.

That's because researchers reckon that some 4 to 6,000 tons of sunscreen float off the skin

of snorkelers each year, enveloping corals in a cloud of chemicals, chemicals that can sicken

or even bleach the coral. But a more eco-friendly way of saving our skin might be to copy

nature's tricks. Algae and cyanobacteria both produce sunlight-absorbing

compounds. So do reef-dwelling fish in the protective slime on their bodies. Researchers isolated those

molecules called mycosporines, which absorb both UVA and UVB rays. Micosporines have actually been used before in a few SPF products,

but in a form that can both penetrate our skin and easily wash off. So the biochemists attach the

mycosporians to chytosan, a polymer derived from the shells of shrimp and crabs. This hybrid package,

they say, is a more effective sunscreen, with constituents too big

to pass into the skin, and it's more resistant to washing off. It's also hypoallergenic, and

didn't affect cell development in vitro tests. The findings appear in the journal Applied Materials

and Interfaces. The researchers say that besides providing a superior sunscreen,

this material could also lead to more durable paints and plastics.

Think lawn chairs and other outdoor items that take a beating from light and heat.

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