The AudioFile: Understanding MP3 compression (Ars Technica)

It's one of the most popular and controversial file types in the world, but most explanations of its workings are either blindingly simplistic or overwhelmingly technical. Learn about the workings of MP3 without a second Ph.D. in this guide.

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Opinion: Waste Paper: Communications and the Decline of Print (Campus Technology)

For years universities have been reducing their print output in an effort to reach the elusive paperless ideal. But they aren't there yet. Maybe it's time to go and do the equivalent of dumpster-diving: Spend an hour or two on your campus looking into the content of the paper recycling baskets that are all over the place. It's almost certain that an analysis of what you find in there will give your some ideas about where your institution is spending money printing stuff that needn't be.

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UC Berkeley Puts Free Lectures on YouTube (Digital Trends)

A new alternative to paying $28,000 per year for an education: going to class online for free. Just don't expect to print out a degree when you're done.

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