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, yacult.co.co.j.

That's y-A-K-U-L-T.co.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.

Light doesn't travel well underwater, so dolphins and other toothed whales navigate like bats

using echolocating clicks. They're like lasers of sound that they produce out of their

forehead and they bounce them off of things the same way bats do

to interpret their environment. Kate Fraser is an oceanographer at the Scripps Institution of Oceanography,

and her studies of underwater clicks include tossing computers, worth about $100,000 each,

over the side of a ship into the Gulf of Mexico. It just feels so wrong, and then, you know, a year later, you go back, you send out this little ping signal and goes

and do, do, do, do, do, do.

And that goes out to the instrument and it drops its weights and just floats to the surface.

And it's like this magical moment, you know.

Oh, my gosh, I never thought we'd get that back.

The waterproof computers have underwater microphones attached. So when they float back up, they're loaded with a symphony of

underwater sounds, including more than 50 million clicks. And by the way, that sample was

slowed down by half and lowered an octave.

Fraser used to comb through that audio herself, staring at the signals and trying to differentiate

...