High concept, high craft: Fiona Hall’s must-see exhibition opens in Canberra

First appearing at the 2015 Venice Biennale, the dark, urgent Wrong Way Time comprises about 800 objects – one of the NGA’s most complex installations ever

Koalas face extinction without stronger protection, say conservationists

Federal environment department says a recovery plan is in development, but conservationists warn the vulnerable koala needs urgent action