Industry News Adele's '21' tops U.S. album chart again, Whitney Houston second 03/07/2012 Adele's "21" is No. 1 on the U.S. album chart for a 23rd week, Billboard.com reported Wednesday. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Whitney Houston Kid Cudi Rihanna Adele Tyga
