CBS13.com: The unseasonably cool summer weather across much of Northern California has served as a stark counterpoint to much of wild weather sweeping the rest of the globe, and a UC Davis professor warns the extreme conditions may be a symptom of worsening climate change that may already be past the “tipping point.” Across the southeast United States, nine heat-related deaths have been reported in Tennessee and sweltering humidity has made record heat in Georgia unbearable. Wildfires …