Sydney Morning Herald: You don’t have to be Lord Stern to see how the costs of climate change are already compounding and spiralling, out of control. Some costs are relatively benign – such as the devaluation of waterfront properties in Byron Bay as sea levels rise – a process starting in earnest whether estate agents like it or not. Other costs are terrible, such as the conservative $4.4 billion figure put on last year’s Black Saturday fires by the Victorian Bushfires Royal Commission, including …