Kelly Baerwaldt, a fisheries biologist and Asian carp program manager for the Army Corps who supports the alternative-source theory, said the new report didn't change her mind.

WSJ: Report: Asian carp may have reached Great Lakes

In humans the vocal tract acts as a filter on the sound from the source, and the "source-filter theory" held that the separate, fine control of the vocal tract to be the product of a long evolution in the development of the subtleties of speech.

BBC: Helium-huffing gibbons 'sing with soprano technique'

The Swiss team say the presence of arsenic in Napoleon's hair, the source of the poisoning theory, was linked to this enthusiasm for wine.

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The source of malinvestment, according to the Austrian theory, is the systematic distortion of the structure of production that has its origins in government manipulation of the interest rate.

FORBES: Gordon Ramsay's Monetary Nightmares

This period of conflict may last for decades, particularly if the new paradigm comes, not from some of the existing leaders of the current scientific establishment but rather from some unexpected and peripheral source, e.g. the dramatically different theory of genetics coming from Gregor Mendel in Moravia or a revolutionary theory of stomach ulcers from Barry Marshall in Perth, Australia.

FORBES: Connect

In theory, he says, location should no longer be a source of competitive advantage in an era of global competition, rapid transport and high-speed telecommunications.

ECONOMIST: Idea: Clustering | The