With new technology and innovation rapidly changing how we live our lives, practice health care, communicate, travel and even attend college, there has never been a better time to enter the field of engineering. Whether your interest is in designing new life forms or creating innovative computer architecture, there are classes and majors you can follow to suit your passion. In the meantime, here are some lectures that may help to inspire your engineering ideas, from the microscopic to the massive, from some of the world's leading thinkers, builders and engineers.