The ranks of the world's richest monarchs are heavily concentrated in the Middle East and North Africa, but European and Asian royalty also make appearances.
What does the global precipitation map look like if we split it in two, one half with below average rainfall and the other above?
Which countries rank the highest in per capita carbon emissions, and how do they impact the world's total carbon emissions?
From Vatican City to Fiji, take a closer look at the world’s 100 smallest countries and their spheres of influence.
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