Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a favourable climate; other regions possess none of them.

世界上有些地区煤炭和矿产供应充足，土壤肥沃，气候宜人；而其他地区则不具备这些条件。

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And an appreciation not just of the animal world - these people know how to make the most of the rocks and minerals.

而且不仅仅是对动物世界的赏识，这些人类已经知道如何物尽其能地利用岩石与矿物。

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World prices for many of these minerals have doubled in 2011, on top of a fourfold increase last year.

许多这些稀土矿产品的世界价格继去年翻两番之后，在2011年已翻了一倍。

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Several gold funds, including U.S. Global Investors World Precious Minerals ( UNWPX) and Midas ( MIDSX), posted double-digit percentage declines last quarter because mining stocks fell in value.

FORBES: Why Good Funds Can Have Bad Performances

If the world price of minerals surged, say, but the prices of farm products fell, Australia's economy would boom, maybe justifying higher interest rates, while New Zealand's sank, creating a need for lower rates.

ECONOMIST: Should Australia and New Zealand form a currency union?

Quite apart from its huge gold deposits, Ghana has diamonds and more than its fair share of many more of the world's most precious minerals.

BBC: News | Africa | Rays of light in Africa