Now that it has found Microsoft in violation of the Sherman Act, the Court faces its most important challenge. It must fashion a decree that promises to introduce effective competition in the market that Microsoft has monopolized ? Intel-compatible operating systems ? and to restrain Microsoft...

As we understand it, the D.C. Circuit did not allow the EPA to consider the costs of complying with ozone and PM NAAQS. As we further understand it, this legal ruling can be overturned only by this Court. As economists, we believe that the D.C. Circuit's ruling not allowing the EPA to consider...