By Larry Bock
Founder and organizer, USA Science & Engineering Festival
In our world of high-tech bravado, I often wonder where we'd be without explorers -- those undaunted heroes and heroines of the past and of today whose achievements, like an unforgettable song or movie -- form a lasting impression in the brain over what the human spirit can accomplish with will and perseverance.
From the annals of history, their names roll off the tongue almost effortlessly: Vespucci, Columbus, Lindbergh, Earhart, Shackleton, Henson, Cousteau, Glenn and others -- people who, bolstered by a sense of…
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