Mobile phones just got a whole lot greener. Samsung's new Blue Earth may just be the greenest phone ever thought up. Made from PCM, recycled plastic, the phone also has an "eco" mode that adjusts screen brightness, backlight and Bluetooth to conserve power. On top of that a built in "eco walk" application (pedometer) will tell you how much CO2 emissions you've saved by walking. And finally, on top of all that....... I told you it may be the greenest phone ever...... it has a solar panel across the entire back of the phone that will charge it enough to make a phone call any time the sun is out. Nice.