Canberra columnist Professor Mark Kenny examines Liberal leader Angus Taylor's fresh criticism of One Nation. In Alabama, there's debate over the use of nitrous oxide as a method to execute death row prisoners. And why are more and more of us watching TV and film with the subtitles on? 

Guests:

• Professor Mark Kenny, columnist with the Canberra Times; Director of the Australian Studies Institute at ANU
• Deborah Denno, criminologist and Professor at the Fordham University School of Law, New York  
• Andy Wright, Oscar-winning sound editor