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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... de Magalhães, (Ferdinand Magellan, sea explorer)
Ferdinand Magellan, (c. 1470-1521), leader of first expedition around the world
Douglas Mawson - Australian ...