Climate change is again in the spotlight, with a leading Australian scientist challenging dire predictions of global warming.
That follows the biggest single year temperature change on record - a drop of point seven degrees in the year to January.
Geophysicist Philip Chapman says he's not convinced by the current arguments on global warming - and says the drop is due to a slowdown in sun spot activity.
“If the sun spot cycle is delay, as it has been then the chances are excellent that the period of several decades of cooling.
“I think returning for the type of climate we had in the early 1800s is really possible.”