Globe Gazette: It’s not the averages, but the extremes that should motivate Iowans, especially elected leaders, to factor climate change into their decision-making, according to a panel that has been studying its impact on Iowa for nearly two years. In biological systems, such as agriculture, “outcomes are defined by the extremes, not the averages,” Iowa State University Professor Richard Cruse told the Iowa Climate Change Advisory Council (ICCAC) on Monday. And the number of extreme weather events – five-inch…