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DOKTOR KABOOM, aka David Epley, gives instructions to sixth-grader Zariah Jones, from the Benton (Wis.) School District, while she uses a Van de Graaff generator during his science show at the University of Dubuque’s Heritage Center in Dubuque, Iowa, in late November.
DOKTOR KABOOM, aka David Epley, gives instructions to sixth-grader Zariah Jones, from the Benton (Wis.) School District, while she uses a Van de Graaff generator during his science show at the University of Dubuque’s Heritage Center in Dubuque, Iowa, in late November.

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