The Fourth National Climate Assessment Volume II: Impacts, Risks, and Adaptation in the United States was just released. NCA assesses the science of climate change and variability and its impacts across the United States. #NCA4 https://t.co/mnHDVgeA50 pic.twitter.com/huF1MsKq7L— NOAA Climate.gov (@NOAAClimate) November 23, 2018