Episode 142. Topic: The most read secular books. Theme: Literature. What is the most read (non-religious) book of all time? Why is this a difficult question to answer? 

Episode 141. Topic: The first author. Theme: Literature. Who was the first known author and what did they write about? And what defines literature and authorship? 

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Episode 140. Topic: Tasmanian devil facial tumor disease. Theme: Cancer. Is it possible to catch someone else's cancer? It is for Tasmanian devils and the consequences may drive this species to extinction. 

Episode 139. Topic: The deadliest cancers. Theme: Cancer. What type of cancer is the deadliest? Which kills the most and which has the highest mortality rate? Are they different? 

Episode 138. Topic: Cures. Theme: Cancer. We often dream that in the future all cancer will be curable. But, what is the reality of cancer cures? Are there cancers that are already curable? 

Episode 137. Topic: Chemotherapy. Theme: Cancer. How exactly does chemotherapy work to stop cancer growth?

Episode 136. Topic: Cancer Stages. Theme: Cancer. What does it mean to have stage 2 cancer? How many stages are there and what do they tell us? 

Episode 135. Topic: Bat bombs. Theme: War. In World War II, the United States attempted to develop incendiaries delivered by bats. What was the reason and results of this military program? 

Episode 134. Topic: How nuclear fusion bombs work. Theme: War. How do modern hydrogen bombs work and how does it differ from the original fission weapons? 

Episode 133. Topic: How nuclear fission bombs work. Theme: War. How did the original nuclear weapons work? How are they different from modern day ones?