I write a regular series on mathematical curiosities for Scientific American
- Record-breaking Prime Number, 41 Million Digits Long, Blows Mathematicians’ Minds
- This Elegant Math Problem Helps You Find the Best Choice for Hiring, House Hunting and Even Love
- Why This Great Mathematician Wanted a Heptadecagon on His Tombstone
- The Paradox of 1 – 1 + 1 – 1 + 1 – 1 + …
- Professional Poker Players Know the Optimal Strategy but Don’t Always Use It
- The 180-Year-Old Endnotes That Foretold the Future of Computation
- How the Guinness Brewery Invented the Most Important Statistical Method in Science
- Does Pi Contain All of Shakespeare?
- How a Classic Bridge-Crossing Puzzle Inspired New Math
- The Strangely Serious Implications of Math’s ‘Ham Sandwich Theorem’
- This Nomadic Eccentric Was the Most Prolific Mathematician in History
- Math Explains Why Your Friends Are More Popular Than You
- The Most Important Unsolved Problem in Computer Science
- Is the Lottery Ever a Good Bet?
- Could Math Design the Perfect Electoral System?
- A Married Bachelor Proves That Unicorns Exist
- How Warren Buffett Rigged a Dice Game with Bill Gates
- What This Graph of a Dinosaur Can Teach Us about Doing Better Science
- Math’s ‘Hairy Ball Theorem’ Has Surprising Implications
- The Gambling Strategy That’s Guaranteed to Make Money and Why You Should Never Use It
- How a Doodler’s Problem Sparked a Controversy in Math
- Where’s Waldo? How to Mathematically Prove You Found Him without Revealing Where He Is
- The SAT Problem That Everybody Got Wrong
- What Is Benford’s Law? Why This Unexpected Pattern of Numbers Is Everywhere
I wrote a weekly puzzle column at Gizmodo:
- Gizmodo Monday Puzzle: How to Solve a Diabolical Hat Trick
- Gizmodo Monday Puzzle: Can You Survive the Hunger Games?
- Gizmodo Monday Puzzle: Can You Solve These ‘Relative’-ly Simple Brainteasers?
- Gizmodo Monday Puzzle: Our Most Controversial Problem Revamped
- Gizmodo Monday Puzzle: Can You Rig the NBA Finals?
- Gizmodo Monday Puzzle: The Amazon Interview Question Bezos Doesn’t Want You to See
- Gizmodo Monday Puzzle: The World’s Simplest Game With a Massive Twist
- Gizmodo Monday Puzzle: Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo
- Gizmodo Monday Puzzle: I Bet You Can’t Tell Time on This Warped Clock
- Gizmodo Monday Puzzle: Only 1% of People Can Solve These Logic Problems… But Really
- Gizmodo Monday Puzzle: The Only Number That Describes Itself
- Gizmodo Monday Puzzle: Tax Evasion for Kids
- Gizmodo Monday Puzzle: How to Always Win at Poker
- Gizmodo Monday Puzzle: Can You Outsmart These April Fools’ Pranks?
- Gizmodo Monday Puzzle: Help Sherlock Solve These Whodunits
- Gizmodo Monday Puzzle: Expose Willy Wonka’s Scam
- Gizmodo Monday Puzzle: Can You Solve These Pi-Themed Brain Teasers?
- Gizmodo Monday Puzzle: This Devilishly Hard Logic Puzzle Will Save Your Life
- Gizmodo Monday Puzzle: Goodbye Wordle, Hello HIPE
- Gizmodo Monday Puzzle: Survivor Contestants Faced This Challenge and They Did Not Do Well
- Gizmodo Monday Puzzle: Who Won the Super Bowl?
- Gizmodo Monday Puzzle: Can You Save the Ugly Duckling from Certain Death?
- Gizmodo Monday Puzzle: Is the Coin Flip Really Fifty-Fifty?
- Gizmodo Monday Puzzle: Can You Solve This Google Interview Question?
- Gizmodo Monday Puzzle: You Don’t Have to Play Chess to Be the Queen
- Gizmodo Monday Puzzle: Do You Really Understand How Calendars Work?
- Gizmodo Monday Puzzle: Do Your Coworkers Make More Money Than You? (solution)
- Gizmodo Monday Puzzle: Can You Solve This Viral Math Test Problem?
- Gizmodo Monday Puzzle: Impossible Geography
- Gizmodo Monday Puzzle: The Simpsons Invented This Surprisingly Tough Geometry Task
- Gizmodo Monday Puzzle: Can You See Through These Illusions?
- Gizmodo Monday Puzzle: Can You Pass This Finance Job Interview Test?
- Gizmodo Monday Puzzle: Can You Survive the Zombie Apocalypse?
- Gizmodo Monday Puzzle: This Counterintuitive Card Puzzle Will Make You Flip
- The Gizmodo Monday Puzzle: How Well Can You Spell?
- Gizmodo Monday Puzzle: Can You Answer Elon Musk’s SpaceX Interview Question?
- Gizmodo Monday Puzzle: Can You Outsmart a Mouse?
- Gizmodo Monday Puzzle: Can You Match Wits With Matchsticks?
- Gizmodo Monday Puzzle: Can You Solve This Brutally Hard Logic Puzzle?
- Gizmodo Monday Puzzle: You’ve Been Drinking Your Coffee All Wrong
- Gizmodo Monday Puzzle: What’s the Best Way to Cheat at Poker?
- Gizmodo Monday Puzzle: 83% of People Got at Least One Question Wrong on This Psychology Test
- Gizmodo Monday Puzzle: Help the Gecko Find a Shortcut
- Gizmodo Monday Puzzle: How Well Can You Read Minds?
- Gizmodo Monday Puzzle: Can You Figure Out These Bizarre Words?
- Gizmodo Monday Puzzle: Can You Solve Lewis Carroll’s Tricky ‘Pillow Problem’?
- Gizmodo Monday Puzzle: Let’s Make a Date
- Gizmodo Monday Puzzle: The World’s Simplest Game Is Much Harder When Played in Reverse
- Gizmodo Monday Puzzle: Can You Detect the Counterfeit Coins?
I regularly write reviews of crossword puzzles at Diary of a Crossword Fiend
Article about the pigeonhole principle for an education blog:
Guest post on my wife’s travel blog from our year abroad: