Armenia, Georgia, the Kyrgyz Republic, and Tajikistan have all experienced substantial out-migration of workers and an associated inflow of workers' remittances over the past two decades. These four countries have much higher human capital, as measured by the Human Capital Index, than is typical...

How can the world reach herd immunity against COVID-19 before the second anniversary of the pandemic, or March 2022? A study of vaccine demand and supply answers this question. A target of vaccinating 60 percent of the population in each country by March 2022 is likely sufficient to achieve...