[
Science,
1984]
In a dimly lit laboratory room in Gottingen, West Germany, Einhard Schierenberg bent his long, angular frame over his microscope, watching and counting, recording what he saw on charts and videotapes, hour upon hour, day after day, intermittently for six years. Five hundred miles away in a tiny, starkly equipped cubbyhole in Cambridge, England, John Sulston was doing the same thing, hunched over his microscope, earphones on his head to block any sound that might divert him from the image in his eyepiece. Sometimes he would sit watching all day long, diligently marking in a notebook with his colored pens. Schierenberg and Sulston were learning, cell by cell, how to build a worm.