“In China, Styrofoam packaging presents such a disposal problem that people often refer to it as ‘white pollution.’ It is thrown from the windows of trains and barges and litters the landscape everywhere. Imagine designing such packaging to safely biodegrade after use. It could be made from the empty rice stalks that are left in the fields after harvest, which are now usually burned. They are readily available and cheap. The packaging could be enriched with a small amount of nitrogen (potentially retrieved from automotive systems). Instead of feeling guilty and burdened when they are finished eating, people could enjoy throwing their safe, nutripackage out the train window onto the ground, where it would quickly decompose and provide nitrogen to the soil. It could even contain seeds of indigenous plants that would take root as the packaging decomposes. Or people could wait to dispose of the packaging at the next train stop, where local farmers and gardeners would have set up stations to collect it for use in fertilizing crops. We could even plant signs that say “Please Litter.”