Most low-income countries in sub-Saharan Africa still aren’t collecting data on agricultural productivity and income, because doing so is unusually expensive and labor-intensive.

Working with a group of global donors, U.N. agencies, and countries, our foundation is helping to ramp up efficient agricultural surveys in the countries where there are gaps, with the goal that all countries are regularly funding high-quality surveys in the next decade.

This will enable them to continually adjust investments and policies based on evidence about what works.