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 Yachtold, visit yawcult.co.

com.j. 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 American 60-second science. I'm Cynthia Graber. Got a minute?

Early warning systems can be the difference between life and death in earthquake-prone regions, but they're expensive.

The U.S., Mexico, and Japan have such systems that leaves large swaths of Central and South America, Asia, and the Caribbean unprotected.

Now scientists think one solution could be hiding in our pockets

are cell phones. Smartphones employ the latest GPS technology. So scientists tested arrays of

smartphones to determine if they could measure displacement caused by the Earth's shaking and signal

the subtle beginnings of an earthquake. For the experiment, the researchers used a hypothetical

magnitude 7 earthquake in California

and data from the real magnitude 9 earthquake off the coast of Japan in 2011 that led to the

tsunami that caused the nuclear accident at Fukushima.

They found that as few as 500 cell phones in California could alert the public five seconds

before an event, enough time to at least move to a less

vulnerable part of a room or dive under a desk. For the Japanese earthquake, early warning would

not have helped in the region closest to the epicenter, but such an alert could have helped cut

damage in downtown Tokyo, and the information would have reached the coastline life-saving

minutes before the resulting tsunami waves did. The researchers in the journal

Science advances. The scientists say various technological details need to be worked out, such as how

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