Bill Nye/ Gregory Mone/ Nicholas Iluzada (ILT)
(6)
Neil deGrasse Tyson/ Gregory Mone (CON)
(3)
Neil deGrasse Tyson/ Gregory Mone (CON)/ Gabrielle de Cuir (CON)/ LeVar Burton (NRT)
(2)
Rebecca Skloot/ Gregory Mone
(1)
Susan Cain/ Gregory Mone/ Erica Moroz/ Grant Snider (ILT)
(1)