The folks who brought us the Nest Learning Thermostat have done it again. They have taken a common household gadget that has not changed in decades and have developed a new modern "smart" version of the product. It is the Nest Protect (smoke and carbon monoxide detector) and is available for pre-order now at their site. Of course, like the Nest Thermostat it is way smarter than the devices that it replaces. And it is internet enabled with iOS apps to inform you about status, and battery life, and even emergency contact numbers. It talks to you and you can "wave it off" if you just burned some toast and want to silence the alarm.