Originally used as an outpost to keep an eye on Napoleon in exile, Ascension Island, between South America and Africa, was a busy Atlantic waystation in Darwin's day.
Dr Dave Wilkinson is an ecologist at Liverpool John Moores University, who has written extensively about Ascension Island's strange ecosystem.
Two hundred years ago, Ascension Island was a barren volcanic edifice.
Ascension Island Charles Darwin's artificial forest captures moisture from clouds that drift over the volcanic peaks on Ascension Island. Google earth.
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