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. 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's 60-second science. I'm Fiona Samuels. The life of a polar bear is hard. It's made even harder as temperatures climb. The bears of the north largely depend on sea ice to survive, hunting seals that take a breath through gaps in the ice. For most bears, their feeding opportunities disappear as sheets of ice melt.

Now, researchers have identified a new subpopulation of polar bears that may be able to survive longer,

thanks to their ability to use glacial ice as a sea ice alternative.

Well, I've been working on polar bears for about 15 years, and this particular study was just really a wholly unexpected

finding that came out of a much larger survey of polar bears along the east coast of Greenland.

That's Kristen Lydra, a marine biologist at the University of Washington in Seattle,

who was part of the team of scientists who spent

years tracking polar bears in Greenland. They recently published their surprising findings in a paper

in science. We lay out the evidence for a previously undocumented and highly isolated subpopulation

of polar bears living on the southeast coast of Greenland.

We knew you could find polar bears in that area, but we just didn't think there were that many because it's not really a place you'd expect a lot of bears or bears to be able to persist for very long.

Basically, the area wasn't expected to be particularly bear-friendly because it goes

long periods of time without sea ice. Generally, polar bears will starve if there are more than

100 sea ice-free days during the year because they primarily rely on sea ice to hunt for seals and other

prey. But these bears can supplement the sea ice-free days with glacial ice.

We realized that this glacial ice was essentially supporting an isolated population. So it wasn't

just they were using it, you know, opportunistically. It was that the only way these bears would

...