Carbon footprint refers to how much greenhouse gas emissions are released into the environment due to the activities of individuals or organizations. There are a number of synonyms for this term, each with its own connotations. Some of the most common alternatives include eco-footprint, environmental impact, carbon impact, and carbon emission. Other related terms may include sustainability footprint, ecological footprint, and carbon offset. No matter which term is used, the goal is to accurately communicate the idea of the impact of human activities on the environment, and to encourage individuals and organizations to take steps to reduce their carbon footprint in order to help combat climate change and preserve the planet for future generations.