The incessant beat of the tom toms heralding the imminent arrival of biologically derived food packaging materials and structures is heard—actually, read—every day on our virtual communications network called the Internet. Sustain the environment, use our terrific new invention discovered in the remote jungles abutting the Amazon or the upper side of Mount K2 and tested by the government package laboratories of Antarctica. This column has dutifully reported on many of the announcements, as diffi…