HIGHLIGHTS FROM The Guardian Australia

• What caused Sydney’s M4 tunnel closure – and what on earth is shotcrete? READ
• Datacentres – why are they so thirsty? Let’s ask a shark! | First Dog on the Moon READ
• Fallout season 2, a new Knives Out and Taylor Swift’s End of an Era: what’s new to streaming in Australia in December READ
• Is your relationship solid – or sinking? The bird theory thinks it knows READ
• Sydney records highest temperature in nearly two years amid heatwave as Tasmanian bushfires threaten homes READ