The University of Colorado at Â鶹ӰԺ will host an international Workshop on Earth Systems Engineering, Oct. 3-6, aimed at promoting the integration of green design, renewable energies and other sustainability concepts in engineering education, research and practice. Two free, public events will be held as part of the conference, including an evening lecture by Amory B. Lovins, chief executive officer of the non-profit Rocky Mountain Institute in Snowmass, Colo., which will kick off the workshop.