Ring My Bell

A history of the cell phone ringtone.

Many recent hip-hop songs make terrific ringtones because they already sound like ringtones. The polyphonic and master-tone versions of “Goodies,” by Ciara, for example, are nearly identical. Ringtones, it turns out, are inherently pop: musical expression distilled to one urgent, representative hook. As ringtones become part of our environment, they could push pop music toward new levels of concision, repetition, and catchiness.

Björk’s Big Bang

The artist discusses her latest record, Biophilia, science and music education. 

Up until she developed a vocal-cord nodule a few years ago, Björk made a point of not investigating how that instrument worked. “With arrangements and lyrics,” she says, squinting over her coffee, “I work more with the left side of my brain. But my voice has always been very right brain. I didn’t try to analyze it at all. I didn’t even know until I started all this voice work, two years ago, what my range was. I didn’t want to let the academic side into that—I worried the mystery would go.”

Inside Instagram: How Slowing Its Roll Put the Little Startup in the Fast Lane

On the popular iPhone app.

Just the day before, President Barack Obama had signed on and begun sending out photos. This seemed like a real sign that Instagram had arrived. Obama already has accounts on Flickr and Facebook. He (or his people) must have seen something unique and wonderful in Instagram's audience, some way to reach people via that channel that it couldn't through others. When the President joins your network, it's news. And while it's great news, it can be the kind of thing a company isn't prepared for. But as it turns out, Obama is a fractional compared to Justin Bieber.

Let the Robot Drive

The autonomous car of the future is here:

I was briefly nervous when Urmson first took his hands off the wheel and a synthy woman’s voice announced coolly, “Autodrive.” But after a few minutes, the idea of a computer-driven car seemed much less terrifying than the panorama of indecision, BlackBerry-fumbling, rule-flouting, and other vagaries of the humans around us—including the weaving driver who struggles to film us as he passes.