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Eureqa (pronounced "eureka") is a software tool for detecting equations and hidden mathematical relationships in your data. Its goal is to identify the simplest mathematical formulas which could describe the underlying mechanisms that produced the data. Eureqa is free to download and use. Below you will find the program download, video tutorial, user forum, and other and reference materials.

Inside NYU art professor David Darts' black metal lunchbox, painted with a white skull and crossbones, is the PirateBox - a tiny Linux server, a wireless router, and a battery. Turn the PirateBox on and you have a self-contained mobile communications and file-sharing device, whereby those in the vicinity can upload and download files securely and anonymously. (See this 2011 Ars Technica story for photos and details.) Built with free and open source software and openly licensed itself, the PirateBox has inspired a number of other projects, including Alan Levine's Storybox and now Jason Griffey's LibraryBox.

When the founders of GitHub moved into their swank South-of-Market loft last year, the first thing they did was redecorate. They turned the floor's biggest office into a parody of an executive suite - complete with fake fireplace, plush leather chairs, and a wooden globe that slides open to reveal a bottle of single malt scotch. Hanging from the wall is a painting of a cat, dressed as Napoleon, with five octopus-like legs. They call it the Octocat.

You want to start your own blog but you don't want to look tacky by using an existing design. Creating your own theme can be daunting, but with some assistance you can have a unique design for your blog in no time. This post will help you put it all together using WordPress, the most popular (and free) blogging software available.