NOVELTY - Vermicomposter comprises: a base (10); at least one stacking tray (30); and a light-tight air-permeable lid (40), where all the members have similar horizontal cross-sectional shape and same number of sides, so that the members can be stacked vertically one above the another to form a stable tower. The bottom of stacking tray nests within the top of base, and the top of the stacking tray nests within the bottom of the permeable lid.    USE - The vermicomposter is useful for producing compost.    ADVANTAGE - The vermicomposter: increases compost production; allows for fast, environmental, and convenient compost production process; rapidly removes gases and heat from the device; provides optimal conditions and parameters without the use of an outside power source; allows the addition of new waste and removes high quality compost from a vermicomposter without disruption of ongoing processes; allows proper airflow while retaining the appropriate amount of moisture within the stacking tray; provides worm migration control among several layers of worm habitat within; and can be readily operated by single person and can be easily assembled, lifted and carried by an average sized person.    DETAILED DESCRIPTION - Vermicomposter comprises: a base (10); at least one stacking tray (30); and a light-tight air-permeable lid (40), where all the members have a similar horizontal cross-sectional shape, and thus have the same number of sides, or are circular with similar plan view shape, so that the members can be stacked vertically one above the other to form a stable tower. The bottom of the stacking tray nests slightly within the top of the base, and the top of the stacking tray nests slightly within the bottom of the light-light air permeable lid. When stacked with the base on the bottom, the stacking tray in middle, the lid on top, and the nesting arrangement between the members creates air permeable but light non-permeable connections between the members.    DESCRIPTION OF DRAWING(S) - The figure illustrates the cross sectional view of the vermicomposter with depiction of airflows.    Base (10)    Stacking tray (30)    Air-permeable lid (40)    Air gap (60)    Lateral air flow (65)