Using data for 128 countries we document low (high) elasticities of agricultural output with respect to labor in economies within temperate (tropical/highland) climate zones.  Adopting a standard model of structural change we show that this technology heterogeneity determines the speed of...

Since the seminal contribution of Gregory Mankiw, David Romer and David Weil (1992), the growth empirics literature has used increasingly sophisticated methods to select relevant growth determinants in estimating cross-section regressions.  The vast majority of empirical approaches however...