aws910 writes "I've often thrown away a CD and wondered how long it will take to biodegrade. Pioneer has developed a blu-ray disc that is made of corn. If this disc is widely used, it may be the only easily biodegradable computer part/accessory (with the exception of pizza). Now I wonder what would happen to one of those new discs if you put one in the microwave for 5 seconds." While the idea of a corn disc isn't new, it's the first Blu-ray version of it.