An emerging worldwide energy crisis demands a new approach for a sustainable energy future. "How we adapt will determine our future on this planet," said physicist Fred Schlachter, during the Department of Physics' Colloquium Series Feb. 26 in Exley Science Center. Schlachter, a guest speaker from the Lawrence Berkeley National Laboratory's Advanced Light Source Division, is the co-author of Energy Future: Think Efficiency, a report that examines how America can look within to achieve energy security and reduce global warming. At Wesleyan, he gave a presentation titled "Over a barrel: A world wide energy crisis." The topic of energy is…