Only about 1 per cent of the land burnt in NSW this bushfire season can be officially attributed to arson, and it is even less in Victoria, the ABC can reveal. The world has been shocked by the scenes of devastation as the unprecedented destruction of Australia's horror bushfire season rages on. The disaster has sparked significant media speculation that many of the blazes were deliberately lit. While it is true firebugs remain a legitimate and serious threat, we crunched the numbers provided by police and fire authorities around the country. The results might surprise you. NSW Rural Fire Service...