Recycling is the re-use of materials that would otherwise be considered waste. Those materials can be sources from pre-consumer waste (materials used in manufacturing) or post-consumer waste (materials discarded by the consumer).
Articles about, or including aspects of, recyling:
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... couples living together, 12.8% have a female householder with no husband present, and 24.0% are non-families. 19.0% of all households are made up of individuals and 7.0% ...