From Coal Trains to Bullet Trains: How China Outbuilt the U.S. in High-Speed Rail
China started building railways in the 19th century – just like the Untied States – but when it comes to high-speed rail, it’s left the U.S. in the dust.
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Where Interracial Marriage Was Still Illegal in 1966—Just One Year Before It Was Struck Down
It’s hard to believe, but until 1967, marrying someone of a different race was still illegal in parts of the U.S. This map shows where those bans were still in place just one year before the Supreme Court struck them down for good.
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What America’s Bridges Are Really Made Of—By County
Steel or concrete? A closer look at 743,398 bridges across the U.S. reveals which material wins out – by county. This colorful map based on the latest 2025 National Bridge Inventory shows how bridge-building choices differ from place to place.
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Which Countries Are Wealthier Than the Global Average?
This map shows which countries have a GDP per capita (PPP) above the global average. It offers a clear visual of the world’s economic divide – where wealth is concentrated, and where it’s not.
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New Zealand’s Disappearing Forests—Mapped Through Time
From forest-covered islands to today’s mix of pine plantations, pastures, and native remnants—these three maps help explain how New Zealand’s geography was reshaped by human arrival, fire, and farming.
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How Hurricane Forecasts Got Way Better
Forecasting hurricanes used to feel like watching a storm through frosted glass. Today, we have a much sharper view. This post explores how the “cone of uncertainty” has narrowed – and what that means for safety, science, and storm prep.
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Why U.S. Time Zones Aren’t as Straightforward as They Look
Ever wondered why Arizona seems to ignore daylight saving time? Or why some towns in Indiana run an hour ahead of their neighbors? This map explains how U.S. time zones work, and why they don’t always make sense.
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Siesta Nations: A Map of Midday Rest Traditions Around the World
Siestas aren’t just a Spanish thing. From Europe to Asia to Latin America, some places still make time for a midday rest. This map highlights where the tradition lives on, and why it makes sense in many parts of the world.
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US states where you can’t pump your own gas
This map shows the two remaining U.S. states where you can’t always pump your own gas, and explains why full-service stations still survive in a mostly self-serve country
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How China’s Territory Changed Over 3,000 Years Mapped
This map shows how China’s territory expanded and contracted over 3,000 years. From the Yellow River basin to the far edges of Central Asia, the post explores key historical events that defined China’s evolving borders.
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