WASHINGTON -- A second Time magazine reporter has been asked to testify in the CIA leak case, this time about her discussions with Karl Rove's attorney, a sign that prosecutors are still exploring charges against the White House aide. Viveca Novak, a reporter in Time's Washington bureau, is cooperating with Special Counsel Patrick Fitzgerald, who is investigating the leak of CIA operative Valerie Plame's identity in 2003, the magazine reported in its Dec. 5 issue. Novak specifically has been asked to testify under oath about conversations she had with Rove attorney Robert Luskin starting in May 2004, the magazine reported....