# Why Mathematicians Are Hoarding This Special Type of Japanese Chalk

This spring, an 80-year-old Japanese chalk company went out of business. Nobody, perhaps, was as sad to see the company go as mathematicians who had become obsessed with Hagoromo Fulltouch Chalk, the so-called “Rolls Royce of chalk.”

# The Whys, Wherefores, and Wonders of Mathematics

Check out this delightful video of math teacher Paul Lockhart—author of *Measurement, "*a permanent solution to math phobia by introducing us to mathematics as an artful way of thinking and living"—waxing lyrical about the splendors of mathematics and mathematical thinking, and why "the mathematical question is always…

# These Knotted Cords Are A Sophisticated Ancient Counting Tool

This looped and knotted section of cords is not only beautiful, it's also a 500-year old mathematical tool.

# Is A Kilobit 1,000 Or 1,024 Bits?: A Mathematical Debate Explained

What is a kilobit equal to? The answer is 1,000 bits, but some people say it should really be 1,024.

# This Week's Puzzle Is Impossible. Can You Explain Why?

The solution to this classic puzzle is that it's impossible to solve. But can you explain *why* it's impossible?

# How Will You Celebrate The Pi Day Of The Century?

Happy Pi Day! How are you celebrating the transcendental, irrational mathematical constant central derived from circles on 3/14/15 at 9:26:53? For me, it's going to be giggling over physicists engaging in an epic chalk battle, and devouring an apple-ginger pie.

# Why Some Things Get Better After A Disaster

Normally, the things around us become damaged after experiencing an unexpected disruption or shock. But there are aspects to our world that actually get better after a setback. Here's why things that don't kill us can sometimes make us stronger.

The Powerball lottery jackpot soared over $500 million last week, leading bright and broke minds everywhere to wonder if math could be deployed to get ahold of some of that cheddar. Here's a handy, graphics-heavy strategy guide ... and hey, invite us to your mansion party when you win, won't ya?

# Use These Tips And Never Lose At Rock Paper Scissors Again

Your days of never getting shotgun are over, thanks to this new video from Numberphile that breaks down the best strategies for winning at Rock, Paper, Scissors.

# How Is A Mathematical Proof Like Frodo's Journey In* Lord Of The Rings*?

When people describe a story as being told in a "by the numbers" fashion, that's usually regarded as bad. But in a talk at Oxford University the other day, scientist Marcus du Sautoy argued that a great mathematical proof is a lot like a story. In fact, a really great proof is like Frodo's journey in *Lord of the Rings*…

**A 56-page document handwritten by Alan Turing will be auctioned off in April**, with part of the proceeds (it's expected to fetch over $1 million) going to charity. The manuscript dates from 1942, Turing's Enigma Code-breaking days, and contains musings on mathematics and computer science.

# The Equation That Can Help Predict Zombie Migration Patterns

The scenario: News reports say that there's been a zombie outbreak at the city hospital. The undead are pouring into the streets, biting hapless citizens. How much time do you have to gather supplies, get out of town and set up a fortified site, before the horde catches up with you? As always, there's a way to…

# Can You Guess The Next Number In This Sequence?

Everything you need to solve this riddle can be found in the numbers you see here. Be apprised: The mathematically inclined tend to struggle with this puzzle.