Wandering through the quadrangles and medieval bastions of learning at the University of Cambridge one overcast Sunday afternoon a few months ago, I found myself ruminating on how this venerable place had been a crucible for the scientific revolution that changed humankind's perceptions of itself and of the world. The notion of Cambridge as a source of grand transformative concepts was very much on my mind that day, because I had traveled to England to meet a contemporary Cantabrigian who aspires to a historical role similar to those enjoyed by Francis Bacon, Isaac Newton, and William Harvey. Aubrey David Nicholas Jasper de Grey is convinced that he has formulated the theoretical means by which human beings might live thousands of years -- indefinitely, in fact.

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