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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... medicines are dangerous, some work, most are a harmless waste of money (plus a possible placebo effect).
Numerous diet programs use people's concern over their image, as ...