This paper studies the economic costs of conflicts at the country and ethnic group settlement level with light output data as measured by orbital satellites and conflict data spatially mapped to latitude and longitude coordinates. Using a worldwide data set of 7,704 individual ethnic group...

The fundamentalist moment -- Coffins and cradles -- America's vanishing labor supply -- The new human environment -- People power -- Fading nations -- The cost of children -- The cost of aging -- The slowing pace of progress -- Home economics -- Freedom and fertility -- Work and families

We study the impact of climate volatility on economic growth exploiting data on 133 countries between 1960 and 2005. We show that the conditional (ex ante) volatility of annual temperatures increased steadily over time, rendering climate conditions less predictable across countries, with...