A snooze in his car has landed a man in custody after police made a shock discovery at Summer Hill in Sydney’s inner-west.

A six-year-old boy is dead and three other people are injured after a dual-cab ute and truck collided on the NSW Far South Coast.

New Opposition Leader Sussan Ley may only last a day in the job, the Liberal Party's federal vice president has joked.

Ross Garnaut is the emeritus professor of economics at The University of Melbourne and The Australian National University. He is a director of The Superpower Institute and ZEN Energy.