The UK's Met Office says cutting global emissions by 3% a year from 2010 offers the only possible hope of avoiding a global temperature rise of more than 2C.
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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