Australia has always been a dry continent where fire has played an important ecological role. But the latest massive conflagrations there are evidence that a hotter climate has thrust Australia into a new normal where fires will keep burning on an unprecedented scale.

A recent study that found no general decline in the numbers of species in individual ecosystems has sparked controversy. Some scientists see it as evidence of how species adapt, while others see it as a sign that common invasive species, such as rats and mosquitoes, are the real winners.

This video illustrates how drastically temperatures in each of the world’s 191 countries have changed over the last century.