Australia is home to some of the oldest trees in the world. But how do they live so long?

To not screen, and then deliver cosmetic procedures to people who may have body dysmorphic disorder, goes against the medical dictum "first do no harm".

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

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.

While more people than ever are graduating from universities, some companies are abandoning degree requirements altogether, often by assessing candidates with psychometric testing or other performance-based tests.