At yesterday's TippingPoint Science Day, Professor Mark Maslin, director of the Environment Institute at UCL, used a vivid phrase to describe the action of switching on a lightbulb: "You are burning fossilised sunlight".
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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