Will the Liberal Party follow the Nationals and dump net zero? There are hopes the Democratic candidate in the New York mayoral race will lead the party out of the wilderness. Plus new techniques and technologies saving koalas from chlamydia.

A coronial inquest into a deadly flash flood has shed light on why an entire town was caught unaware. Is the recent wild weather a sign of what's to come this summer? Sarah Ferguson interviews historian William Dalrymple.