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 Yacult.

As you might have heard, heat records are breaking all around the world from the Mediterranean

to South Asia.

Most recently, records fell on the Pacific Northwest and Western Canada.

Across British Columbia, residents are dealing with a record breaking heat wave.

17 temperature records fell on Saturday with heat advisory sprawling over much of Western Canada.

This is not a usual May. This is not even that abnormally dry May. This is something exceptional.

A few places saw temperatures in the mid-90s. For context, that's about 20 to 25 degrees Fahrenheit above normal.

Today we're talking about heat. It's nearly summer in the northern hemisphere, and with climate change, today's hot summers will be among the coolest of the rest of our lives.

I'm Scientific Americans' Earth and Environment editor, Andrea Thompson.

I'm Kelso Harper, a SIA multimedia editor, and you're listening to Science Quickly.

So, Andrea, first things first, how does a heat wave even happen?

Heat waves happen when a high-pressure system parks itself over an area for several days.

Under these systems, air sinks, which keeps clouds from forming. And if you don't have clouds in the sky, that means the sun can really bake the surface.

Imagine getting into your car after it's been sitting in the sun, and you get the picture.

Right. And this can be really dangerous. In June of 2021, a particularly strong heat wave

in the same area contributed to hundreds of deaths.

With climate change, heat waves like this are happening more often, they're lasting longer, and they're likely to become more intense as time goes on.

...