As the railway lines have been upgraded over the years, the price differences between rural and London housing have shrunk and as that example shows, you can actually calculate the price difference to a fair degree of accuracy.

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Signal Hill Group analyst Michael Carboy said Wuxi, China-based Suntech's "bread-and-butter piece of business" was not expected to move the company's stock price significantly, and pointed out that due to "a fair degree of concern that the Spaniards will announce adverse revisions to its incentive structure" in the sector, many solar stocks have fallen in recent days.

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None of these have been decided by the new Patent Trials and Appeals Board, but they will be interesting to watch to see to what degree they provide a thorough and fair way to litigate disputes of patent validity.

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Another is that, until turbines are built to withstand 3, 000-degree steam, a fair amount of the fuel's energy is wasted.

FORBES: Rocket Science