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Is the boom in commodity prices coming to a end? Ruchir Sharma of Morgan Stanley thinks so. But the investor, Jim Rogers, says that economic growth in China means it's not over yet.

From mining to tourism; the commercial opportunities of space. American space expert Ed Hudgins describes the possibilities.

And ahead of the US Labor day holiday, Steve Fritzinger in Washington, finds himself hanging upside down from a tree and starts thinking about an invention of the industrial age - leisure.

(Image: Lorries arrive with their loads at the Chuquicamata copper mine in Chile. Credit: AFP / Getty Images)