Compulsory voting, lost civilisations and country music

Should everyone have to vote? What can we learn from the Aquiry civilisation? And why is country music top of the pops? The Week and Arion McNicoll, standing in for Olly Mann, delve behind the headlines and debate what really matters from the past seven days. With Rebecca Messina, Harriet Marsden and Felicity Capon. Image credit: Jason Kempin / Getty Images