Today's Special for our blog readers: 15% off the Brain Storm. Doesn't that name sound powerful? The Brain Storm is a combination of any one of our books and any 6 mental_floss back issues. You get to pick the ones you want most. If you want to read more about the back issues before you decide, click here.

During the checkout process, you'll have the opportunity to fill in a discount code. Put in the word "storm" (without quotation marks) and the discount will be applied.