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Fall 2006


Volume 22, Issue 2

FEATURES

Everything about the Hoover Dam is unfathomably enormous—and it went up in less than three years during America’s worst depression

How the genetic code became a revolutionary tool for law enforcement

For much of the last century, balloons could go far higher than airplanes. One ascent set a record that lasted into the jet age.

Why do inventors keep trying to improve a technology that is not only supremely simple but-for most of us-obsolete?

They were gems of artistry as well as of innovation

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