I have a huge collection of NASA photos taken from the Astronomy Pic of the Day Web site (http://apod.nasa.gov/apod/astropix.html) stored in a folder in my Dropbox. No matter what computer system I'm using, I rotate those images on my background, getting a virtual tour of the universe on every screen.

Editor's note: Drupal Commerce Kickstart 2.0 was released yesterday after much testing and perfecting, and the artic

Many programming languages include libraries to do more complicated math. You can do statistics, numerical analysis or handle big numbers. One topic many programming languages have difficulty with is symbolic math. If you use Python though, you have access to sympy, the symbolic math library.

You can write shell scripts in mere seconds, hack the kernel in your sleep and perform other feats of Linux wizardry—but can you teach?

Last month, I showed you an awesome audiobook player app for Android, but I didn't share my frustration in getting the audio files on to my phone. When I plugged my phone in to the computer, I couldn't get the SD card to mount, no matter what settings I changed.

Data, Data Everywhere When I was younger, I read a lot of books. Although they've fallen out of style, some of my favorite books were of the "Choose Your Own Adventure" variety.

I've reviewed plenty of simple text editors designed for writers. For my writing, I really desire only a few features: Support for plain text. Spell Czech. Running word count.

I became aware of the Arduino Project from occasional media reports and a presentation at Atlanta LinuxFest 2009. I was impressed with what the Arduino community was doing, but at that time, I saw no personal use for it. It took a grandson who is heavily involved in a high-school competitive robotics program to change things for me.

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The Audible app for Android is a great way to consume audiobooks. You have access to all the books you've purchased on Audible, and you can download them at will. Plus, the app provides all the bookmarking features you'd expect from a professional application. Unfortunately, if your audiobooks are from somewhere other than Audible, you need something a little more flexible.