Hello, welcome to the Ruby Advent Calendar 2017. Let’s continue the series on Day 2 with factbook - Turn the World Factbook (260+ country profiles) into open structured data e.g JSON. Explore the world with Ruby e.g. Where do you find gold? Look for the economy / resources section. What countries have the most internet hosts? What countries have the most proven crude oil reserves? And so on. Cheers. PS: You’re more than welcome to send in your articles (about your library / gem of choice) too!