How much biodiversity can we lose before it starts impacting our quality of life? We all depend on well-functioning ecosystems, whether we are aware of this or not. Yet measuring how much biodiversity we are losing across the African continent, and what that means for our well-being, is a difficult task. To address this challenge, we are mobilising hundreds of African biodiversity experts to produce a continental map of ‘biodiversity intactness’ that is credible and useful to African decision-makers.