Oct. 16, 2009
Last week, NASA crashed a probe into the surface of the moon in search of water, just weeks after two other teams reported finding their own clues to the presence of water in the lunar soil. We'll get a wrapup on the hunt for water on the moon.
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From the Vault
Ira Asks: How Do They Make Eyeglasses?
You deliver your prescription to an optician, and they return with a pair of eyeglass lenses tailored precisely to your personal vision quirks. But how?