I got this cool bracelet recently. It’s made with part of an old globe. I bought it both because I like maps and because it has Thailand, Cambodia, and Laos on it, and we took a trip there last year.
Little did I know when I bought it, the bracelet also contains a geography mystery. Towards the top, there’s a little sliver of pink between Mo [...]
Posts tagged geography
Help Me Solve a Geography Mystery
I got this cool bracelet recently. It’s made with part of an old globe. I bought it both because I like maps and because it has Thailand, Cambodia, and Laos on it, and we took a trip there last year.
Little did I know when I bought it, the bracelet also contains a geography mystery. Towards the top, there’s a little sliver of pink between Mo [...]
Wrong in Public: the 4-Color Theorem ...
One of my readers pointed out an error in my recent post about the 4-color theorem. I wrote an update that reframes the theorem in terms of graph theory and talks about some corollaries of the theorem.
A diagram I created that illustrates part of an argument about the 4-color theorem.
My reasoning was that we could take a region of a map that [...]
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