When vanilla prices skyrocketed, farmers in Madagascar actually cleared *more* forest, killing the idea that getting richer helps the environment.
arXiv · March 17, 2026 · 2603.13706
The Takeaway
While it is often assumed that poverty is the main driver of environmental destruction, this study of a global price boom found the opposite can happen. In fertile regions, the sudden influx of cash gave farmers the resources they needed to clear even more land for agriculture, showing that making people wealthier can unintentionally accelerate the loss of nature.
From the abstract
Tropical deforestation and rural poverty are deeply intertwined, yet isolating the causal effect of income on forest loss remains challenging. We use the 2015 global vanilla price boom, triggered by food-industry shifts toward natural flavoring, as an exogenous income shock affecting Madagascar's primary vanilla-producing region. Using a matching-augmented synthetic control design, we estimate that income gains reduced annual deforestation by 1.7 percentage points in 2017, equivalent to approxim