Our emotional, psychological, and social well being is part of our mental health. It's affecting the way we think, feel and act. It's also helping us figure out how to cope with stress, how to relate to others, and how to make healthy choices. Climate change, for example, is a significant change in average weather conditions, such as warmer, wetter, or drier, over a period of several decades or more. The distinction between climate change and normal weather variability lies in the longer term trend.