Almost 40 per cent of Brazil's native vegetation is located on over five million private properties. This study assesses the potential of agricultural land taxes and tradable forest certificates for conserving Brazil's fragmented native vegetation across commercial farms, using micro census data from 2006 and 2017. We explore the variability of optimal tax rates and market prices for forest certificates, revealing a supply-demand imbalance in the Amazon and high sensitivity of conservation outcomes to changes in farmland opportunity costs, especially in productive areas. Despite a more positively skewed distribution of opportunity costs by 2017, market outcomes remained unaffected. Notably, expanding the market to include the Amazon's agricultural frontier microregions could achieve 45 per cent of the conservation target. Our analysis underscores the interplay between market-based conservation mechanisms and regional agricultural economics, highlighting the need for tailored approaches to optimize conservation efforts.

Stunting, a manifestation of chronic malnutrition, is widespread in India. This, coupled with biased preferences of parents towards their eldest sons, has led to stunting and underweight among girls that grows sharply with increasing birth order. We study the impact of an environmental water pollutant on child growth outcomes in arsenic contaminated regions of India. Using a large, nationally representative household survey and exploiting variation in soil textures across districts as an instrument for arsenic, we find that arsenic exposure beyond the safe threshold level is negatively associated with height-for-age and weight-for-age. Negative effects are larger for girls who are born at higher birth orders relative to the eldest. This, we argue, suggests that the lack of adequate nutrition and health care during early childhood can make girls more vulnerable to external environmental hazards due to their lower immunity and underdeveloped bodies.

We study household fuel choice in rural China through the lens of social interactions, deploying a structural discrete choice interaction model to explain peer-dependence in household fuel choice. The data comes from the China Family Panel Studies 2010–2020, and we use multiple strategies to examine the robustness of the social interaction effects. We find a significant endogenous social effect, meaning that whether a household chooses non-solid clean fuel for cooking is directly affected by the choice in cooking fuel made by its neighbors in the village. Households with lower non-farm income are more sensitive to the choices of others, and the fuel choices of households with a higher education and/or a higher income attracts more attention from others. Modern communication technologies facilitate information exchange among rural residents, thereby strengthening the endogenous social effect. We suggest that public policies can accelerate rural energy transition by stimulating positive social spillovers.

We explore the theoretical conditions in which natural capital improves explanations of aggregate income growth from factor changes. With positive total factor productivity (TFP) growth, including natural capital better explains growth if natural capital growth rates exceed physical capital growth rates. With negative TFP growth and higher natural capital growth rates, natural capital worsens explanations of growth. Using a comprehensive dataset on natural resource stocks and income shares in GDP, we perform an empirical analysis with 99 countries over three time periods between 2001 and 2015 and find that 41 per cent of country-time periods meet the conditions for improved growth explanation with natural capital. Of these, 59 per cent occur because TFP growth is negative, and physical capital growth exceeds that of natural capital. In these cases, including natural capital simultaneously reduces bias in factor shares and TFP estimates and improves the share of growth explained by changes in factors.