This blog is one of more than 900 that have signed up to join Blog Action Day.
On October 15 each blog will write about 'water'. Last year the topic was 'climate change' - 13,606 bloggers from 156 countries joined in the conversation.
Mary Robinson has said 'water is the oil of the 21st century, and waste is the gold.' So the topic, really, is the new oil.
Ancient Peruvian civilisation grew mighty by harvesting guano
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The Chincha Kingdom was transporting seabird excrement from islands to
valleys as early as the 13th century, and this powerful fertiliser may have
been key...
5 hours ago



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