Floreon3D has just unveiled a brand new 3D printer filament consisting of a PLA/Polyester material that they have been working on to refine for the last 5 years. The company says that this new filament is completely biodegradable, and possesses some of the properties of typical PLA, except that it's stronger, much stronger. In fact they claim that this new Floreon3D filament is 4 times as strong as PLA print objects with a vibrant matte finish. Available colors are white, black, green, red blue, and yellow and it comes in the 1.75mm size only. More details on this UK-based company as the filament can be found here: http://3dprint.com/78455/florean3d-pla-filament-3d/