Exclusive: Research confirms official advice about high-risk properties and warns worsening conditions will make more homes unsafeSign up for climate and environment editor Adam Morton’s free Clear Air newsletter hereAlmost every home destroyed in New South Wales during the black summer bushfires of 2019 and 2020 was inside the 100 metre buffer zone used to identify properties most at risk, new research has found.The findings are an endorsement of the risk maps used by authorities, but the res