Tired of people preaching, er, gently encouraging you to think green? Well, your cell phone might soon be doing the same. Nokia this week announced that some of its forthcoming phones will be programmed to "include alerts encouraging people to unplug the charger once the battery is full," according to the company. That capability will first appear in the Nokia 1200, Nokia 1208 and the Nokia 1650, but the alerts Tired of people preaching, er, gently encouraging you to think green? Well, your cell phone might soon be doing the same.Nokia this week announced that some of its forthcoming phones will be programmed to “include alerts encouraging people to unplug the charger once the battery is full,” according to the company. That capability will first appear in the Nokia 1200, Nokia 1208 and the Nokia 1650, but the alerts will be rolled out across the Nokia product range down the road. Remarkably, Nokia estimates something so simple as an alert telling people to unplug theirs phone “could save enough electricity to power 85,000 homes a year” (presuming users heed the alerts, I suppose).It’s a nice start, Nokia, but hopefully it’s just that: a start. I agree with the folks over at TreeHugger : Phones and other devices that need charging should have a built-in kill switch that forces the charger to turn itself off when the battery is sufficiently powered.To take it one step further, as recommended by TreeHugger’s Matthew Sparkes: “If a device sits inactive for a certain period of time, then it should shut itself down.” Technology Industry