In a matter of months, a second Australian airline has gone into voluntary administration: this time it's Rex, whose ambitions of challenging Qantas and Virgin on capital city flights with 737-800s have dramatically hit the rocks. But with its regional Saab 340B flights still running, and the federal government signalling it doesn't want to see Rex fail, there's still plenty of hope that the airline won't completely go the way of Bonza – or, for that matter, its predecessor Ansett. Adam and Jake discuss what went wrong at Rex, the possible paths forward, and whether something needs to be done about the dominance of the Qantas-Virgin duopoly. Plus, Air New Zealand scraps its 2030 sustainability target – are dreams of a greener sky in danger?