Kyoto Protocol

The Bureau of Meteorology added new colours, deep purple and pink, extending its temperature scale from 50 degrees to 54 degrees celsius to reflect the ever-incresing intensity of heat in Australia. Photo: EPA

New purple alert signals need for climate talks

The colour purple is the new climate alert. It is the shade Australian weather forecasters added to their maps in anticipation of record high temperatures - over 50 degrees Celsius in some parts of the continent. It is not as if Australia is unused to searing heat.