To emphasise its claim that there is no convincing evidence using the acknowledged scientific method that carbon dioxide (CO2) can or does cause temperature warming beyond natural cyclical limits long observed and recorded, the New Zealand Climate Science Coalition has offered to New Zealanders the Professor Augie Auer prize of $NZ10,000, to be granted to the first applicant to present real-world evidence showing that the man-made fraction of airborne carbon dioxide causes dangerous global warming.