Articles by Dan Lewis

Hi! As long-time readers of the newsletter know, I’m a fan of variant sudoku puzzles — sudoku with [...]

If you have a toddler at home, you know that meal time is always a trick. They want to feed themselves but [...]

It’s a scene you’ve seen on TV or in movies dozens of times. Something goes wrong on a single-person [...]

https://youtu.be/a7LPLJz4vAQ?si=HC0p5dhajeDUsHj5 On December 1, 2025, the New England Patriots hosted the New [...]

Hi! I’ve been writing Now I Know for more than fifteen years and I’ve gotten a lot of questions about it [...]

Pictured above is a famous portrait of Louis XIV of France from 1701. You’ll immediately notice that [...]

If you’re a fan of margaritas, you’ve had your fair share of tequila. It’s the key ingredient to the [...]

Hi! Most days, this newsletter is about the world — a surprising fact, a hidden history, a story you [...]

If you’ve ever photobombed a friend’s picture, you probably didn’t think much of it. Maybe [...]

When driving, it’s important to pay attention to the signs, and particularly the warning signs. The sign [...]