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.

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It's not just your imagination.

Heat waves are actually getting hotter.

They're also happening more often, lasting longer, and starting earlier in the year.

For Scientific American Science quickly, I'm Rachel Feldman.

Today I'm talking to associate editor Andrea Thompson, who covers the environment, energy,

and earth sciences for Siam.

She's here to tell us why we're not likely to beat this heat anytime soon, and give us

some tips on how we can keep each other safe even on the most sweltering days.

So even on the most sweltering days. So it feels like summer has gotten a lot worse since I was a kid.

Honestly, since I first moved to the New York City area, like a little more than a decade ago.

Is there data to back that up?

There absolutely is. I know exactly what you mean. I grew up in Atlanta and moved to New York 15 or so years ago. And Summers now feel more like the summers I remember in Atlanta growing up, which is not, as far as I'm concerned, not a good thing. But there is a ton of data backing up that summers really do.

They are as bad as they feel like they are.

Temperatures are actually some of the most robust trends we have in terms of climate change. We have much longer data.

It's very good quality data that's taken, especially in the U.S. from all over.

And it's very clear that summers are

getting hotter, sort of at every scale. So from the scale of the globe, down to the local level.

...