Mental Floss

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No siestas during this major holiday.

There’s a lot to learn about the rich history surrounding Cinco de Mayo, the annual springtime celebration of Hispanic heritage and culture in the United States. Discover the origins of the holiday here, plus so much else.

Jessica Bloustein Marshall








It's not whipped cream.

Cool Whip’s ingredients aren’t a total mystery—but they’re also not as simple as cream and sugar.

Ellen Gutoskey


Add more heft to your TBR pile with these gripping fiction and nonfiction books.

The best Vietnam War books from Tim O’Brien, Viet Thanh Nguyen, and others offer new insights and perspectives into the conflict that you probably never got from history class.

Greg Zapata






Grab your magnifying glass.

We give you an obscure word with four definitions—one correct, three made up. Can you identify the correct one?

Ellen Gutoskey
A supermarket poultry case containing packages of raw chicken.

Salmonella, norovirus, and other germs are often found in raw poultry and fresh produce—and can find their way into your digestive system. Here’s what to know about the symptoms and treatments for food poisoning.

Jake Rossen








A male cardinal.

These crested songbirds add a welcome dash of color to yards throughout much of the United States. Let’s get a little better acquainted with our rosy, non-migratory neighbors.

Mark Mancini