Today is April Fools’ Day, the annual holiday that celebrates pranking, hoaxes, and all manner of horseplay and tomfoolery.

I had no idea at all.

From France to Iceland to the United States, April Fools’ Day is celebrated with practical jokes and elaborate hoaxes.

Gretchin Rubin, happiness researcher and bestselling author of “The Happiness Project” shares her favorite life tips that ...

Children ages four to seven demonstrate natural fact checking skills when put to a test with zebras and space aliens ...

Gretchin Rubin, happiness researcher and bestselling author of "The Happiness Project" shares her favorite life tips that ...