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.

.j.p. That's y-A-K-U-Lt.C-O.jp. 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.

LEDs use only a quarter of the energy of incandescent bulbs. But despite their efficiency,

there's one thing they're not that good at. They have a hard time giving directional light.

Sangam Chatterjee, a physicist at the University of Marburg and the University of Gieson in Germany.

Chatterjee and his colleagues may have fixed that. They devised a highly focused, but still energy

efficient light beam by starting with something that's already a highly focused beam, a laser.

The key is what they shoot the laser at, a substance with a particular structure.

I'm always tempted to say white powdery substance, but I guess there's some connotation on that.

They synthesize the material from cages of tin and sulfur atoms, decorated with hydrocarbon

molecules. The laser-produced infrared light, which the human eye cannot see, goes in. But what

comes out are many different optical wavelengths. It's a molecular light converter.

It basically changes the color of the light

while retaining the directionality of the laser.

So you can make something like a white laser beam

containing many, many colors.

That mix of colors overall glows bright white, like a halogen bulb in a beam.

The studies in the journal Science.

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