The biggest gains in office rental in the Sydney and Melbourne markets have passed, according to UBS.

A burst of wet weather could have helped to kill off mammoths and other large herbivores, by transforming much of the world's grasslands into bogs and forests and depriving megafauna of food.

Prime Minister Malcolm Turnbull's language on skilled migration closely mirrors that of his US counterpart Donald Trump.

James Comey goes about his business in a manner based on instinct and an ingrained sense of protocol, gained during a long career as a public servant, including as attorney-general and head of the FBI, Zoe Daniel writes.

Yes, Malcolm Turnbull mimicked the US President. But as piss-takes go, the Prime Minister's chief target was himself, and it was suitably humorous and self-deprecating, writes Andrew Probyn.