George Kourounis (Self - Adventurer and Storm Chaser), Hakeem Oluseyi (Self - Astrophysicist and Author), Cyrena Arnold (Self - Meteorologist), Austin Rogers (Self - Jeopardy! All Star), James Delgado (Self - Maritime Archaeologist and Author), Nandini Pandey (Self - Professor of Classics: John Hopkins University), Kavitha Davidson (Self - Journalist), Sam Kean (Self - Author and Historian), Bradley Trevor Greive (Self - Paratrooper and Explorer), Paul Sutter (Self - Physicist and Author)