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Understanding topoisomerase better could lead to cancer drugs that prevent the cancer cell from duplicating itself , Andricioaei says . I sometimes find it hard to believe it ’ s been 45 years since President Kennedy issued his call to put a man on the moon , because the enthusiasm and energy it produced in me and so many others is still so distinct . The most efficient , powerful nanomotor found in nature so far is a proton-fueled rotary motor that bacteria use to swim . Let me repeat that : I guarantee we will protect all copyrighted materials . " I do n't believe Congress wants to begin the New Year with these two men going to prison for attempting to apprehend an illegal alien drug smuggler . Learning how to build and operate these machines would lead to the ultimate interface of man and machine . If we have done our job as faculty and as mentors , we have given you the tools to think critically , to act creatively , and to lead boldly .