Hugs for Chelsea, a benefit album for Chelsea Manning. Recommended listening (and buying, of course).

Pinboard Acquires Delicious, WJW.

Tectonic is a modernized, complete, self-contained TeX/LaTeX engine, powered by XeTeX and TeXLive.

A New Public-Key Cryptosystem via Mersenne Numbers, by Divesh Aggarwal, Antoine Joux, Anupam Prakash, and Miklos Santha.

Maybe Skip SHA-3, my sentiments too.

Veusz is a scientific plotting and graphing program with a graphical user interface, designed to produce publication-ready 2D plots.

EvoCAD: Evolution-Assisted Design (1999), by Pablo Funes, Louis Lapat, and Jordan B. Pollack. Genetic algorithms for LEGO.

A Puzzle of Clever Connections Nears a Happy End, “Given five points, and assuming no three fall exactly on a line, prove that it is always possible to form a convex quadrilateral.”

Can’t see the FOUR-est for the trees, Peter Seibel enumerates trees in Haskell.

A Kisrhombille Tessellation Based Geometry and a New Kind of Fractal, by John Greene.