Nov. 4, 2004 — Giving a new meaning to the term grassroots music, Pioneer Corp. said Thursday it had developed a next-generation disc made of corn to let the eco-conscious consumer dispose of data in the soil.

The Japanese electronics maker said the Blu-ray optical disc, which can be written once and stores 25 gigabytes of data, is 87 percent natural polymer derived from corn and biodegrades.
http://dsc.discovery.com/news/afp/20041101/corndisc.html

nice but those discs are ugly mfs!