Mr. Thomas Karl is director of the National Climatic Data Center, the world’s largest data center for climate data and information. He also manages the Climate Change Data and Detection Program Element for the National Oceanic and Atmospheric Administration’s Office of Global Programs. Karl is best known for his work on climate change. He has authored about 100 articles in peer-reviewed journals and more than 200 technical reports. He is the editor of the Journal of Climate and associate editor for Climate Change. He has also been called on to brief the White House and Congress on climate variability and climate change. Karl is a fellow of the American Meteorological Society and the American Geophysical Union and has received numerous awards for his climate work. He did postgraduate work at NC State after receiving a master’s degree from the University of Wisconsin-Madison, and a bachelor’s degree from Northern Illinois University. He lives with his wife, Dale Ann, in Asheville, NC.