from Vin Marshall at PopSci:

The vast amount of information at our fingertips these days can be as distracting as it is useful. Tracking something like the movement of an index on the stock market by feverishly checking a ticker all day is often more than you want to deal with. So this cube lets you display data it receives wirelessly from the Internet—trends in the market, the weather, your Twitter traffic—in the simplest form possible, as light that subtly changes in color and intensity. Say the skies are expected to clear up: Per your programming instructions, the cube will just turn a pleasant blue. Inside, an open-source Arduino microcontroller with Wi-Fi connectivity runs the show, downloading any data source (RSS feeds, for example) and translating it into instructions for the attached LEDs. Then you can just kick back and enjoy the light show.