Mark Kenny's Canberra, death penalty methods in the US, and why more of us are using subtitles

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