So in the absence of this type of evidence, we have to rely on what we know about bipolar disorder in general.

CNN: Can a person 'discourage' bipolar disorder?

Last year's fight over the arcane concept of network neutrality--the absence of restrictions on the type of content that can move over the privately owned networks that comprise the Internet--was just a preview.

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Community and governance: vast swathes of the literature are about how institutions, the presence or absence of corruption (even the type of it) influence growth.

FORBES: World Happiness Report: Even Jeff Sachs and Richard Layard Don't Really Believe It