Chris Patten's new book says it would require only $15bn to meet the United Nations Millennium Development goal of halving the number of people who lack access to safe drinking water, compared to 'the approximately $100bn a year spent on bottled water'.
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...
4 hours ago
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