Providing energy for the world’s population in an efficient and environmentally responsible manner is a major challenge to the world’s population for the 21^st century. Chemical Engineering is at the core of developing energy sources including: improved petroleum refining, production and refining of biofuels, coal gasification and clean coal technology, and hydrogen energy technologies including fuel cells. Paralleling the efforts to develop new energy sources are the technologies for a clean environment. Chemical Engineering has led the way in clean air technology from power plants and automobiles, and is leading technology development in greenhouse gas reduction and sequestration.