Conservation programs must embrace causal evidence when evaluating impact (commentary)

In 2006, Paul Ferraro and Subhrendu Pattanayak issued an urgent warning: conservation lacked the causal evidence needed to know what actually works. This mattered because decades of conservation efforts were failing to stall the decline in biodiversity around the world, suggesting that scarce funding was potentially being diverted to well-intentioned but ineffective efforts, rather than […]

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