As the theme of this year’s World Population Day reminds us, investing in data collection is important to understanding problems, tailoring solutions, and driving progress. So is finance.

The World Population Prospects 2019: Highlights, estimates that the next 30 years will see the global population add an extra 2 billion people to today's figure of 7.7 billion, and, by the end of ...

Here’s one way to visualize the imprecision: Any time you’re looking at a chart of future population projections, there is a ...