Smoke from bushfires in the Blue Mountains advanced upon Australia's largest city yesterday, looming low, thick and massive in the afternoon sky.

Image: Rex/Phil Hillyard/Newspix

Via New Scientist:

Australia's bushfires play an integral part in the ecology of the country. But climate change is causing them to worsen, along with other extreme weather such as floods and torrential rains.

Some experts are even recommending that parts of Australia be restricted as "uninhabitable zones" – places where the fire risk is so high no home should be built.

More here.