Snow   Families drove across state borders so that children could see snow for the first time— with dogs running beside trucks and kangaroos watching from the edge of a forest.   Never seen anything like it before, one farmer said. He’d driven down to Tenterfield from Queensland. Hey, look, aren’t the kids havin’ fun? As children laughed and a snowball flew through the air, followed by another.   Snow in summer! This was “a first” in recent times. A TV reporter explained it as a coastal freeze. Another called it a joke without denying the beauty and wonder it…