Why climate change hits poorest countries hardest

It's long been said that climate change will be felt earliest and most severely in the poor nations of the world that contributed the least to the problem. A recent study, along with illuminating data from a new World Bank Report, show how this is the case.

Change in extremely hot days by the end of the century based on two emissions scenarios. Data: World Bank Atlas of Sustainable Development Goals, 2018; Adapted from a World Bank report; Map: Harry Stevens/Axios