Today's Visions of the Science of Tomorrow "At the end of every year, John Brockman, a literary agent and the publisher of Edge.org, a Web site devoted to science, poses a question to leading scientists, writers and futurists. In 2002, he asked respondents to imagine that they had been nominated as White House science adviser and that President Bush had sought their answer to "What are the pressing scientific issues for the nation and the world, and what is your advice on how I can begin to deal with them?" Here are excerpts of some of the responses."