Bill Gates appreciates the importance of high-quality data to guide decisions. He was the keynote speaker at the 20th anniversary symposium of the Global Burden of Disease (GBD) study in Seattle recently. Gates was followed by Jim Kim, President of the World Bank. These two very heavy hitters – one, the richest man in the world, and one who runs the largest investment bank for developing nations – are huge fans of high-quality data that can be used to make decisions and guide investments in global health and development. I’m using the occasion of this anniversary to share more about the GBD study with our readers and to highlight the innovative use of data to improve global health.