Lawless violence in the developing world is a plague that undermines efforts to end extreme poverty.
Excerpts and reviews of top books on social innovation
Meeting the world's growing demand for water will require advances in technology that build on 3,000 years of progress.
An emerging "data-driven" science of human behavior promises to help us understand and solve social problems.
The art of expanding an organization is less about aiming high than about "grinding it out."
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