There is a (figurative) mountain of dead animals rotting in the bush. What we do with them could drive species toward extinction – or help save them. If only we weren't so squeamish.

Wildlife authorities have moved swiftly to deal with a mix of animals trapped in mud near dried-out lakes at Menindee amid calls for more action to ease an "animal welfare crisis".

Australia is a land of droughts and flooding rains, but the mess that is the Murray Darling Basin is a man-made ecological disaster.

The unlovely weed is altering the city's ecosystem and raising the risk of fire.

The fish kill brings home the failure of the last decade.