World of Maps Blog
Stories, rankings and explainers built from real global data — the countries that lead and lag on everything from GDP to forest cover. Every post links to an interactive map you can explore.
Do More Doctors Mean Fewer Infant Deaths? A 154-Country Check
Physician density and infant mortality correlate at −0.73, one of the strongest links in global health data. The countries that break the pattern show why it isn't the whole story.
Does Money Buy Happiness? What the Country Data Actually Shows
Comparing GDP per capita against national happiness scores across 160 countries. Income explains about 41% of the gap — and the exceptions are more interesting than the rule.
Why Do Birth Rates Fall as Education Rises? The 150-Country Picture
Fertility and university enrolment correlate at −0.66 across 150 countries. South Korea now records 0.75 births per woman. What the data shows, and what it can't.
Healthcare Spending vs Life Expectancy: Why the Link Is Weaker Than You Think
Health spending as a share of GDP barely predicts how long people live — the correlation across 193 countries is just 0.18. Here is why the statistic misleads almost everyone.
How to Read Country Statistics Without Being Fooled
Six traps that make world rankings misleading — share-of-GDP ratios, inverted index scales, gross enrolment above 100%, and more. With worked examples from real datasets.
The Digital Divide in 2025: Internet Access vs National Income
Income predicts internet access far less well than it used to — a correlation of just 0.47 across 185 countries. Mobile networks broke the old relationship.
Press Freedom and Corruption: How Closely Do They Actually Track?
Across 170 countries the two indices correlate at −0.61. The Nordics sweep both ends. But both scores come from expert surveys, which complicates what the number means.
Why the World's 'Most Renewable' Countries Are Its Poorest
DR Congo gets 96% of its energy from renewables. Kuwait gets 0.1%. The statistic is real — and almost everyone reads it backwards.
Sanitation and Maternal Mortality: The Strongest Link in the Atlas
Access to basic sanitation and maternal death rates correlate at −0.80 across 184 countries — stronger than income, doctors or health spending. Why plumbing tracks survival.
The 10 Countries with the Highest Fertility Rate (2024)
Which countries lead the world in fertility rate? See the top 10 (and the bottom of the table) for 2024, measured in births per woman.
The 10 Countries with the Highest Forest Coverage (2023)
Which countries lead the world in forest coverage? See the top 10 (and the bottom of the table) for 2023, measured in % of land area.
The 10 Countries with the Highest GDP per Capita (2024)
Which countries lead the world in gdp per capita? See the top 10 (and the bottom of the table) for 2024, measured in US dollars per person.
The 10 Countries with the Highest Healthcare Expenditure (2024)
Which countries lead the world in healthcare expenditure? See the top 10 (and the bottom of the table) for 2024, measured in % of GDP.
The 10 Countries with the Highest Internet Users (2025)
Which countries lead the world in internet users? See the top 10 (and the bottom of the table) for 2025, measured in % of population.
The 10 Countries with the Highest Life Expectancy (2024)
Which countries lead the world in life expectancy? See the top 10 (and the bottom of the table) for 2024, measured in years.
The 10 Countries with the Highest Population Density (2023)
Which countries lead the world in population density? See the top 10 (and the bottom of the table) for 2023, measured in people per km².
The 10 Countries with the Highest Population Total (2024)
Which countries lead the world in population total? See the top 10 (and the bottom of the table) for 2024, measured in people.
The 10 Countries with the Highest Renewable Energy Use (2022)
Which countries lead the world in renewable energy use? See the top 10 (and the bottom of the table) for 2022, measured in % of energy use.
The 10 Countries with the Highest Urban Population (2024)
Which countries lead the world in urban population? See the top 10 (and the bottom of the table) for 2024, measured in % of population.