Sydneysiders urged to stay indoors as Australian bushfire smoke blankets city
Wildfires have so far this month claimed at least four lives, burnt about 2.5 million acres (1 million hectares) of farmland and bush and destroyed more than 300 homes
Wildfires have so far this month claimed at least four lives, burnt about 2.5 million acres (1 million hectares) of farmland and bush and destroyed more than 300 homes