Comprehensive description of the environmental benefits of composting solid waste. Complete directions for composting, detailed description of composting chemistry, suggestions for applications of humus, question and answer page, scientific activities for school children regarding composting benefits and physics involved, comprehensive table of compostable materials, directions for building many types of home composting bins, plus links to other waste management information.

Nearly one third of our food ends up in the trash can. Matthew Ross details the steps we can all take to vermicompost at home, and why it makes good business sense to do so. [4:29]

Video lesson shows how to find the volume of an irregular 3D figure by breaking the figure into 2 rectangular prisms and finding the volume of each part. [3:48]

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Students investigate what types of materials biodegrade in the soil, and learn what happens to their trash after they throw it away. The concepts of landfills and compost piles will be explained, and the students will have an opportunity to create their own miniature landfill in which the difference between organic and inorganic waste will become clear.