Bill Nye speaks to a sold-out Eisenhower Auditorium.

Bill Nye speaks to a sold-out Eisenhower Auditorium.

The Science Guy, Bill Nye, speaks to a sold-out crowd at Eisenhower Auditorium, Nov. 18, 2015.

The "Science Guy," Bill Nye, speaks to a sold-out crowd at Eisenhower Auditorium, Nov. 18, 2015, hosted by Penn State's Student Programming Association (SPA).

IMAGE: Cameron Hart
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