Dr Mitchell, who is the deputy director of the University of Western Australia Oceans Institute, said it was partly good news that so many species were being recognised as threatened. She said ...

"Australia's ever-growing list of threatened species is a direct result of decades of under spending," she said. "Turning this tragedy around will take a dramatic increase in action and investment.

The island needs to be pest free for a year before threatened species including wallabies that once lived on the island are introduced to a new haven. South Australia's fourth-largest island is ...

The study "The estimated cost of preventing extinction and progressing recovery for Australia's priority threatened species" has been published in the Proceedings of the National Academy of Sciences.