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.

Yachtold 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 yawcco.com.j.j. That's Y-A-K-U-L-T dot-C-O-J-P.

When it comes to a guide for your gut, count on YacL.

Happy Monday, listeners. This is Rachel Feltman for Science Quickly, but you're actually

not listening to our weekly news roundup.

See, crafting a news roundup that's hot and fresh and ready to go first thing on Monday morning

takes a lot of hustle on Thursday and Friday.

We figured you'd understand why we'd rather avoid that over the holiday.

But we didn't want to leave you hanging too long without a new episode of science quickly to enjoy.

So I went and dug up a wild blast from the past for us to share instead.

In June of 1924, which, yeah, was 100 years ago, wow. Scientific American was publishing articles that are kind of depressingly relevant today, actually.

One piece reported on a conference at Yale meant to tackle the rising issue of traffic jams and automobile accidents.

Another lamented the endless supply of food waste and other garbage coming out of 20th century cities,

and yet another reported on our efforts to eradicate bedbugs.

Isn't it great to know that we've just solved all of those problems and definitely haven't

made any of them worse?

But there's this big, beautiful data illustration near the front of the issue that really caught

my attention. It's called the family tree of coal tar.

The roots of this stately tree are shown to be planted firmly in black coal, and its branches

split into a dizzying array of byproducts, which are then used to make an equally dizzying

...