| | When you move pieces around within a larger shape, the area should remain the same. And yet ... |
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| Seismologists explain what they know about earthquake mechanics, and why we can only forecast—not predict—quakes. |
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| Believers say one gigantic boat was swapped for another for insurance money. Here's the truth. |
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| New details emerge about the secretive Next Generation Air Dominance fighter program. |
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| This is how a barnyard escapee can quickly resemble a feral hog, growing bigger and hairier in a matter of months. |
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| From running marathons in space to staying on task despite Earth's distracting beauty, we got the inside scoop on life as an astronaut. |
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