An article in the UK's Guardian wonders if DNA will ever be the basis for computers, replacing silicon chips. The idea came from USC's Leonard Adleman, who showed that DNA could be used to solve the traveling salesman problem and, last month, Japanese scientists made a sort of DNA from artificial bases. But in the article, Andrew Ellington from the University of Texas at Austin says, "I think my general opinion about DNA computing is not 'no' but 'Hell, no'." The reactions, he adds, are slow and error-prone.