As global warming gets worse every year, more people are becoming concerned about their impact on the environment and their personal carbon footprint, which is the total greenhouse gas emissions that a person emits. MyEarth was created by researchers and students at the University of Wisconsin-Madison's School of Human Ecology and tracks your energy use and savings. Nancy Wong, a professor of consumer science, created the app to make it easy to reduce your daily energy use. Designed with a diary format, users can choose daily activities to reduce their carbon emissions and energy use.