For those of us who like to use our smart phone for pretty much every possible thing, there's an interesting product coming out -- the Lapka Environmental Monitor. It is a set of sensors for your iPhone that can detect radiation, electromagnetic feedback, nitrates in raw foods, and temperature and humidity. Basically, you'd be able to tell whether or not your food is organic, or the most comfortable spot in your home to relax where you won't get zapped by pollutants.
read more at:
http://www.treehugger.com/gadgets/turn-your-iphone-into-environmental-sensor.html