Brian Simpson is a stand-up comic who hosts the "Bottom of the Barrel" improvised comedy show at the Comedy Mothership and his own podcast, "BS with Brian Simpson." Watch his new special, "Brian Simpson: Live from the Mothership," on Netflix.www.briansimpsoncomedy.com
Professor Brian Cox is an English physicist and Professor of Particle Physics in the School of Physics and Astronomy at the University of Manchester in the UK, author of many books, and broadcast personality. www.apolloschildren.com