This summer on Planet Money Summer School, we're learning about political economy.

We're getting into the nitty-gritty of what government does with things like trade, taxes, immigration, and health care.

So politics and economics, which are taught separately, they shouldn't be separated at all.

I think you have to understand one to really appreciate the other.

So what is the right amount of government in our lives?

Tune into Planet Money Summer School from NPR.

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Live from NPR News in Washington, I'm Windsor Johnston.

President Trump is on his way back from a four-day visit to Scotland.

On Air Force One, Trump took questions about his falling out with Jeffrey Epstein, a convicted sex offender.

NPR's Tamery Keith reports Epstein died by suicide while in federal custody ahead of his trial

and has been the focus of conspiracy theories ever since.

Trump had been friends with Epstein before the sex trafficking allegations came to light.

He says the friendship soured over Epstein poaching staff from his Mar-a-Lago resort.

On Air Force One, reporters pressed for more details, asking if those employees had been young women.

And the answer is yes, they were.

Yes, they were young women?

What did they do?

In the spot. In the spot. Yeah. People that work in the spa. I have a great spa. One of the best spas in the world at Marilago. And people were taken out of the spa hired by him. In other words, gone. Trump said he told Epstein to stop taking his employees. And when he did it again, quote, I said out of here.

Tamara Keith, NPR News. The EPA says it wants to roll back a major climate finding that's been on the book since 2009.

The original decision stated that greenhouse gases like carbon dioxide and methane, mostly from burning fossil fuels, poses

a threat to public health and the environment. It gave the federal government the power to regulate

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