Finding America's Lost Medieval City

Finding America's Lost Medieval City

A thousand years ago America was home to man-made earthen structures that would rival the pyramids in size. Where? St. Louis, of course.
What If

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What If Earth’s Axis Was Tilted by 90 Degrees?

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The Earth sits comfortably in its orbit tilted on its axis at 23 degrees. Knock the planet over - and it wouldn't be the Earth as you know it.
What If We Had Thermal Vision?

What If We Had Thermal Vision?

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What If Teleportation Was Possible?

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What If We Could Refreeze the Arctic?

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What If We Geo-Engineered Earth?

What If We Geo-Engineered Earth?

Scientists have already put forward some interesting ideas.
What If Our Bodies Kept Evolving?

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What If a Magnetar Collided With a Black Hole?

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What If There Was No Salt in the World?

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What If We Terraformed the Moon?

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What If Pangea Never Broke Apart?

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Where on Earth would you be if the Pangea supercontinent never broke appart?
What If You Were Swallowed by a Whale?

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What If You Lived During the Middle Ages?

What If You Lived During the Middle Ages?

At least they didn'€™t believe the world was flat.
What If Everyone Fell Asleep At The Same Time?

What If Everyone Fell Asleep At The Same Time?

How would our world change if we were all forced into the same sleep schedule?
What If Everyone Fell Asleep At The Same Time?

What If Everyone Fell Asleep At The Same Time?

How would our world change if we were all forced into the same sleep schedule?