But the hard reality is that few emerging markets have any hope, in the foreseeable future, of creating the type and volume of economic opportunities needed to reverse or even substantially slow the brain drain.

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Thus the whole package of beliefs, expectations, likes and dislikes that you hold inside are creating change -- or blocking it -- at the level of brain circuitry.

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This team is leading the Walk Again Project, an international consortium of research centers dedicated to creating brain-computer interfaces to restore movement.

CNN: Brain-controlled devices may help paralyzed people

The brain, trying to deal with major emotional trauma, can alter its neural pathways, creating, essentially, a different person.

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