When President Theodore Roosevelt visited East Africa in 1909, there were about 300,000 rhinos in the area. Now, reports The Economist, there are perhaps 2,000.
The problem is not that the rhinos are half-blind, lumbering, and often infertile - which they are. It is economic ...
(Ht: The Browser)
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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