Invasive species are the biggest single threat to Australian plants and animals.
A recent report argues more water is needed to resurrect the Murray-Darling Basin. But simply increasing river flow alone could actually harm the Basin.
Millions of dead carp will fill the Murray-Darling Basin after the government releases a targeted virus. Scavengers like turtles and crayfish might help – as long as we protect them.
Released carp herpes virus may cause a "carpaggedon" of stinking dead fish in our rivers.