Geography
What’s the World’s Oldest (and Deepest) Lake?
You may not know much about Lake Baikal, but maybe you should: The world's oldest existing freshwater lake on Earth reaches far deeper than any other lake on the planet, and is home to an incredibly diverse ecosystem. Check out these fascinating facts.
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Top 10 Most Densely Populated U.S. Counties
The average population density of the United States is just over 95 individuals per square mile. But in certain parts of the nation, those density numbers skyrocket into the thousands. Here’s a look at the top 10 densest counties in the U.S.
Geography
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The World’s Smallest Inhabited Islands
The world's largest island is Greenland, covering 836,330 square miles, but on the opposite end of the spectrum are islands are only a few thousand square feet. Check out five of the tiniest islands that people call home.
Geography
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10 of the World’s Largest Estuaries
An estuary is a type of ecosystem found when a river flows into the ocean. Discover 10 of the world’s largest estuaries.
Geography
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5 of the World’s Biggest Plateaus
Found on every continent, plateaus can vary immensely in size and altitude. From the Altiplano of South America to the colossal Tibetan Plateau in Asia, these are five of Earth’s major plateaus you should know.
Geography
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