Are we getting better at knowing what actually works in conservation? Insights from fifty years of conservation evidence

Biodiversity is declining fast, and with limited funding and resources in conservation, it matters that these resources go towards actions that genuinely make a difference. So how do we know which actions deliver results, and which don’t? The answer depends on the quality of evidence behind them – which is largely contingent on the study design used. New research from Staples et al (2026) in …