New mobile phone models are being released with alarming regularity, so it would be really nice if they had some really good features, right? Other than being able to make calls, send text messages, take photos, surf the Web, etc. Bike couriers in Cambridge will be setting out with pollution sensors and GPS units linked to their mobile phones; the findings will then be monitored by the scientists in charge of this project. Even pedestrians can become pollution trackers–they just have to carry the sensors around. It’d be interesting to see how much pollution there is in different cities, and I hope something like this can be done all over the world. Hah, I’d like to see the pollution levels here, for one.