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From This Collection

I've always wondered: how mint flavoring became associated with clean teeth

Sep 8, 2023
Listener Grant Cohoe says he's "not a fan of mint" and asks: "Why it is that mint is so ubiquitous in toothpaste, mouthwash and the like?"
Mint flavored toothpaste at the store. 
Mitchell Hartman/Marketplace

Why do airlines set weird departure and arrival times?

Aug 25, 2023
Forget “the logic of the clock.” The airline is thinking about the airplane, not the customer, one expert told us.
Have an 8:02 a.m. flight to catch?
Drew Angerer/Getty Images

You may be losing out on retirement money if you leave your job early 

Aug 11, 2023
Some employers will match your contributions to your retirement fund, but you may have to stay with them for years to access that money.
Some employer matching contributions come with strings attached.
pinkomelet/Getty Images

Do landlords get tax credits for empty buildings? 

Aug 4, 2023
Some regions provide a form of tax relief, but under special circumstances, while others actually tax cities for commercial vacancies.
People walk past vacant stores at a mall in Miami, Florida.
Joe Raedle/Getty Images

For public good, not for profit.

Liquid hand soap vs. body wash: What's the difference?

Jul 14, 2023
They’re made of the same chemical components, but the amounts vary to address different needs.
You can also use hand soap as body wash if you really wanted to.
Tradol Limyingcharoen/Getty Images Plus

Does it make cents to get rid of the penny?

Jun 30, 2023
They clog our couches and streets, and they buy less than they cost to make. But they hold value for our national identity.
People treat the penny as if it's worthless, yet the currency continues to stand the test of time.
Max Zolotukhin/Getty Images