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.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 Yacolt.

Happy Monday listeners. I'm home from vacation and plugged back into the 24-hour news cycle,

so you don't have to be. Let's get the week started by catching up on some of the science

stories you may have missed while you were working hard, hardly working, whatever floats your

boat. For Scientific American Science Quickly, I'm Rachel Feldman.

We're in the midst of some scorching weather here in the eastern half of the U.S., and we are not alone. Last week, an unusually early heat wave hit Greece, and temperatures in Athens soared up to

104 degrees Fahrenheit, which is 40 degrees Celsius for you metric nerds.

Conditions in the Greek capital were so dangerous last Wednesday and Thursday that the ancient acropolis actually closed down all afternoon on both days. That site is so popular with tourists

that last year the country started capping visitors at 20,000 per day just to keep things

from getting too hectic in there.

Schools also shut down in several regions and the Labor Ministry ordered a pause on all outdoor

work including food delivery all afternoon on Thursday. Folks are especially concerned about

last week's heat wave because it's apparently the earliest ever recorded in Greece, and that

has people naturally worried about what July and August have in store.

Last year, an unprecedented two-week heat wave in July closed the Acropolis for a whole fortnight.

And while I love the excuse to use the word Fortnite, that's obviously bad.

Anyway, let me make that up to you with a little bit of good news about the climate.

This story starts just under 40 years ago when scientists realized there was a big old hole in the ozone layer.

...