Sad news to report from the American Idol world tonight – Adam Cook, the oldest brother of American Idol season 7 winner David Cook, lost his battle with brain cancer at 1:00 a.m. on May 3, 2009. David Cook announced his brother’s death Sunday morning in Washington D.C. where the singer was serving as grand marshal for the 12th Annual Race for Hope 5K Walk/Run. “I actually lost my brother yesterday to a brain tumor and I couldn’t...