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

You've probably seen those little cards in hotel rooms. Toul on the floor if you want a fresh one.

Toul on the rack if you'll use it again. And using towels more than once means less laundry,

which saves water and energy. But you don't pay the utility bills at the hotel, so do you really

care? Well, a new study in the journal Nature Energy suggests hotel guests really are motivated

to conserve for factors other than money. The study actually shows that even if people have

zero financial benefits, they still respond to this kind of feedback for

environmental reasons. Verena Tiefenbeck studies information systems research and behavioral economics

at the Swiss Federal Institute of Technology in Zurich. Her team studied the lodger energy use

issue by installing smart shower meters in six Swiss hotels, 265 rooms in all. The meters displayed

an ongoing tally of water and energy use as guests were washing up. 20,000 showers later,

the scientists found that their simple intervention encouraged guests to use 11% less energy per shower.

That's compared to guests in a control group who simply saw the water

temperature displayed on the meter. This finding probably won't revolutionize the bottom line for

hotels, though. Each smart meter would save a hotel only about 20 bucks a year. But in homes,

where most people take most of their showers, the savings actually could add up for the individual.

And devices like these could help consumers focus their efforts where they matter most.

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