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.

.jp. That's Y-A-K-U-L-T.C-O.JP. When it comes to a guide for your gut, count on Yacolt. In 2016, I got a ride on the pothold highway north out of Manouse, Brazil, in the Central Amazon.

After an hour, my driver shifted down and swung our pickup onto a dirt road.

For the next 20 miles, we dodged axle-deep ruts and fallen trunks.

This was my first of many subsequent visits to a rustic ecological station, known simply as ZF2.

I'm Daniel Grossman, and this is science quickly.

I come to see the early stages of what's been called

one of the most remarkable and highly anticipated climate experiments.

Starting in 2013, researchers had staked out two circular plots, each the size of a baseball

diamond, a vine-draped 10-story tall trees. They'd measured and tagged every trunk bigger than a fence

post.

After years of anticipation, the experiment had raised its sales and seemed ready to launch.

And then it ran out of cash.

It was put on hold for half of the next decade.

But finally now, it's back, and its equipment is about to be

turned on. Over the course of the next three episodes, I'll take you on a fascinating journey

into the Amazon Free Air CO2 enrichment project known as Amazon Face. I'll explain what this

experiment was meant to accomplish, why it was

delayed, and how construction of its apparatus eventually got underway. I'll draw on nearly

...