The majority of the world's poor, by income poverty and multi-dimensional poverty, now live in countries officially classified by the World Bank as middle-income countries. Of course nothing happens when a country crosses a (somewhat) arbitrary threshold in per capita income but it does matter...

In this paper, we present new projections for a range of global poverty-related Sustainable Development Goals (SDGs), specifically, extreme monetary poverty, undernutrition, stunting, child mortality, maternal mortality, and access to clean water and basic sanitation. Our projections, based on...