Named by Time Magazine as one of the 100 most influential people of 2014, Katharine Hayhoe is an atmospheric scientist, who studies climate change, one of the most pressing issues facing the planet today. She crunches the data, analyzes the models, and helps engineers, city managers and ecologists quantify the impacts. An Evangelical Christian, as well as a climate scientist, Katherine is calling us to awareness about climate change and our responsibility for it. She is an associate professor in the Department of Political Science and director of the Climate Science Center at Texas Tech University. Her research focuses on establishing a scientific basis for assessing the regional to local-scale impacts of climate change on human systems and the natural environment. Her work as a climate change evangelist is featured in the documentary series Years of Living Dangerously and The Secret Life of Scientists and Engineers, and in articles appearing in popular and peer-reviewed print media.