President-elect Donald Trump has announced his choice for Treasury Secretary.

Scott Bessent, a hedge fund manager, will be expected to try to sell Trump's populism to Wall Street.

I'm Ayesha Roscoe.

And I'm Scott Simon, and this is up first from NPR News.

Scott Besson once had ties to Democrats, but has emerged as a key Trump advisor in the past year.

He's defended tariffs, which many in the business community oppose.

Plus, Trump's nominees for several other top positions.

And Florida's Surgeon General urges communities to stop adding fluoride to their drinking water.

That's despite decades of research that shows the mineral helps prevent tooth decay.

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