There are hundreds of rivers on Earth’s surface, moving freshwater from hills and mountains down to larger rivers, lakes, and oceans.
Thanks to the planet’s natural slopes and ridges, falling rain that isn’t absorbed by soil or evaporated also ends up in nearby rivers. This area—where all flowing surface water converges—is called a river basin, drainage basin, or watershed.
The Top 20 Cities for the World’s Ultra-Wealthy
How many millionaires, centimillionaires, and billionaires live in the world’s wealthiest cities?
While such metrics are not all encompassing, these measurements of private wealth do help put the financial health and economic activity of some of the world’s wealthiest cities in perspective.
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Mapped: The World’s Countries Compared by 20 Key Metrics
Which countries have the largest populations? What about the rural versus urban population divide? And which countries have the highest Gross Domestic Product (GDP), military expenditures, or tech exports?
Visualizing The Smoking Population of Countries
According to Our World in Data, about one-in-four adults around the world smoke tobacco—at least on an occasional basis. And in many countries, a majority of these smokers are men.