Grunge was so self-consciously lowbrow and nonaspirational that it seemed, at first, impervious to the hype and glamour normally applied swiftly to any emerging trend. But sure enough, grunge anthems found their way onto the soundtracks of television commercials, and Dodge Neons were hawked by kids in flannel shirts saying, 'Whatever.'

The iPad - contrary to the way most people thought about it - is not a tablet computer running the Apple operating system. It's more like a very big iPhone, running the iPhone operating system.

The new Zune may not be an iPod killer, but it does offer a clean interface, great industrial design, HD radio, and a subscription model for music, making it significantly less expensive for big users.

While learning to code may have once been an arduous or expensive process, the college dropouts who developed Codecademy have democratized coding as surely as Gutenberg democratized text. Anyone can go to Codecademy and start learning and creating code through their simple, fun, interactive window, for free.

We have the alternative. "Do I want to be on the subway looking at these people, or do I want to be in my phone looking at my people?"

Global warming, you don't win it. It's this weird steady-state issue that's going to be with us for a few thousand years.

A currency designed for long-term storage and investment doesn't do so well at encouraging transactions and exchange in the moment.