Sydney Morning Herald: WALKING into a cave of stalagmites and stalactites is like entering a Tiffany’s showroom. But unlike an expensive ring, the sparkle of these formations is a precious record of climate history. Australian scientists are using structures from the Wombeyan Caves, south-west of Sydney, to build a picture of rainfall patterns in NSW over the past 1000 years. Until now, rainfall records extended back only to the 1800s, the lead researcher, Janece McDonald, of the University of …