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 Christopher in Talata. Got a minute?

Climate scientists forecast sea levels to rise anywhere from one to four feet by the end of the century.

That's a pretty big range. And there's a good reason for that. There's a lot of uncertainty baked into climate models.

Take, for example, the way climate models predict how trees respond

to drought. Drought in these models is treated as a light switch. Either on or off. But in the real

world, we know that drought can damage trees and that it takes some time for trees to repair this

damage and recover. William Anderag, an ecologist at Princeton University. He and his colleagues

examined tree ring data from more than 1,300 sites around the world. And by comparing the rings

with known drought records, they found that trees don't simply kick back into gear as soon as rains

return. Drought actually puts the tree's water transport systems under a huge amount of tension, he says,

causing air bubbles to leak in, which damages or blocks those pipes.

I often compare this to a sort of a heart attack for a tree that in some cases it can be lethal

and in some cases they can repair that blockage.

And that drought hangover causes tree growth to lag 5 to 10% below

normal for several years following a dry spell. This is a problem because forests currently take up

about 25% of human emissions of CO2, which is an incredible break on climate change. And the less CO2

the trees are able to take up, the warmer it gets.

...