Edward Kolla, associate professor of history at Georgetown University in Qatar, explains how the true history of national self-determination, as well as the controversy it can engender, stretches back to the French Revolution.
Sadie Witkowski, a sleep and memory researcher at Northwestern University, talks about targeted memory reactivation (TMR) and examines how neuroscientists are putting TMR to work to boost aspects of memory consolidation.
Dr Bill Phillips, Senior Lecturer in the Modern Languages and Literatures Department at the University of Barcelona, Catalonia, writes about the association of crime fiction with the city and the rise of particular kind of protagonist, the hard-boiled detective.
Martin Rees, from the University of Cambridge, ponders whether there is a limit to what we are capable of understanding.
Tomas Engelthaler, psychologist, and professor Thomas T Hills, both from the University of Warwick, UK, ask a very serious breakfast-table question.
Award-winning director, Professor Brent E. Huffman, talks about how through his work he aims to inspire others to create documentary films and videos that push the boundaries of the medium and tell emotionally engaging stories to wide audiences.