But it also included language in the amendment that pharmaceutical companies had to prove significant clinical efficacy enhancements of their drugs over already-patented compounds.

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In a note to investors last night, Porges wrote that the efficacy results, though significant, might be less than some doctors and investors were hoping for.

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"There is a significant body of scientific and clinical evidence supporting the safety and efficacy of ginkgo extract for both cognitive function and improved circulation, " said Mark Blumenthal, executive director of the American Botanical Council.

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Focusing especially on Christianity but including Judaism, Islam, Buddhism, Hinduism, and Chinese spiritualities, Armstrong examines the diminished impulse toward religion in our own time, when a significant number of people either want nothing to do with God or question the efficacy of faith.

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