Age of Yosemite Valley Revealed
Those visiting Yosemite Valley look at the EL Captain’s granite wall with amazement. One will wonder how the half-dome’s sliced...
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Chemistry and Technology
Space and Astronomy
If you have ever had the fortune of looking up on a clear night sky where the moon and stars...
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Ever since we started investigating Mars with spacecraft back in the early 1960s, investigators have been on the lookout for...
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The moon is a mystery to many. Is it a piece of cheese? Is there a man trapped in there...
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