If you are collecting capitals stop off at Brisbane, but most continue to tropical Cairns, a jumping-off point for cruising the Great Barrier Reef, the coral-jewelled necklace that makes the most stunning adornment to this coast.

BBC: Epic traveller��s routes

At that point, most people would be happy to retire to a tropical locale and maybe dabble in angel investing or something.

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It is indeed an irony that, in the area of tropical disease, the wicked drug firms have discovered the value of not-for-profit business at precisely the point when governments are contemplating the idea that the best way forward is the use of incentives more attuned to red-in-tooth-and-claw capitalism.

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