This report considers past change over geologic time, recent evidence of accelerated rates of change, and the implications of continued climate change in Maine during the 21st century as a result of greenhouse gas emissions and their associated pollutants. Maine Sea Grant’s Communication Coordinator, Catherine Schmitt worked with a multidisciplinary team to compile and edit the 2009 Report and several follow-up features on specific topics, and she is currently working on an update to the original report.