從看到人行道旁一包包用塑膠袋包起的落葉，開始思考物質與能量循環如何在今日都市出了嚴重差錯。落葉歸根道理也應套用到廢棄物處理方法，那麼如何將臺大校園內的廚餘轉化為校園的養分？

From seeing bundles of fallen leaves wrapped in plastic bags on the sidewalk, we began to consider how the material and energy cycles have gone awry in today's urban environments. The principle of leaves returning to the roots should also apply to waste disposal methods. So, how can we transform the kitchen waste on the NTU into nutrients for the campus?