evidence: Australia may warm by four degrees or more this century, the IPCC has found [...] Australia has warmed by about 1.4℃ since 1910. The IPCC assessment concludes the extent of warming in both Australia and globally are impossible to explain without accounting for the extra greenhouse gases in the atmosphere from human activities. [...] If global average warming is limited to 1.5℃ this century, Australia would warm to between 1.4℃ to 1.8℃. If global average warming reaches 4℃ this century, Australia would warm to between 3.9℃ and 4.8℃ .