from Sustainable Brands Three in five Americans say they will make a New Year's resolution to live a more environmentally responsible lifestyle in 2015, according to a nationwide public opinion poll released this week by advocacy marketing consultancy Tiller, LLC. The survey is the latest in a string released this year that point to Americans' deep and growing concern for the environment. When asked which factor posed the greatest long-term threat to their health and wellbeing, Americans chose climate change and environmental problems (45 percent) above terrorism (35 percent) and global epidemics such as ebola (21 percent). This prioritization is consistent with Americans' increasing concern over global warming and the belief expressed by more than half of all respondents (57 percent) that the condition of the environment has worsened over their lifetime. The Americans surveyed expressed a growing resolve to take personal responsibility for the environment: A w…