Key iPod architect Tony Fadell on Tuesday brought out an unusual follow-up in the Nest Learning Thermostat. Borrowing some of Fadell's learning from his time at Apple, the Nest Labs device is designed both with very simple rotary control and intelligence that auto-adjusts based on real habits. It uses humidity, motion, and temperature detection to automatically lower the temperature when the home is idle, and it can track patterns to tell when it's most likely to need to change the temperature.
