Police have released footage of a man they would like to speak to after three others were charged over an alleged assault on teenage girls amid Sydney Mardi Gras celebrations.

Laura McBride, the Australian Museum’s First Nations director, will sort through tens of thousands of cultural objects in her efforts to repatriate human remains to their communities.

The Department of Planning has made two referrals to the anti-corruption watchdog over a multibillion-dollar project in Sydney’s inner west.

Sydney’s rising temperatures are forcing people out of their homes as the cost of airconditioning makes us think twice about turning it on.

The NSW government will invest $750 million over the next 10 years to help big polluters modernise their technology.