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Senior Advisor to the
Open Philanthropy Project
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The domestic economic impacts of immigration
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The impact of life-saving interventions on fertility
Little Greek letters become weapons in war of words over trend in violence
Are the benefits of moderate drinking a myth?
Four points on the debate over the impact of the Mariel boatlift
Malaria maps, then and now
On the geometric interpretation of the determinant of a matrix
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Senior Advisor to the