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

A massive, 170-square kilometre wind farm near the small town of Rokewood in the state's south west has been approved by the Victorian government to help tackle the state's energy needs.

The first sign Graeme McCrabb knew something was badly amiss in the Menindee Weir Pool was when he drove his car over the Darling River bridge near the town last Sunday.

A tiny island rodent, the Bramble Cay melomys, has become the first known demise of a mammal because of human-induced climate change.

The use of carbon credits to meet Australia's Paris climate targets would be "consistent" with the current Kyoto Protocol, the Morrison government said in the strongest signal yet it plans to exploit accounting ambiguities to meet its international commitments.