Watch old pennies turn bright and shiny right before your eyes!
Find links relevant to Mars and space exploration.
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The anatomy of memory.
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Most people abhor the sound of their own recorded voice. So what are these recording devices doing to our voices to make them sound so awful?
They're a menace to ships, but life thrives in these frozen oases.
How can a microscopic organism lift several pounds of dough? Find out with this activity.
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