Lifestyle News 'Three Cups of Tea' author Greg Mortenson cancels speech, cites health 04/24/2011 Best-selling author and philanthropist Greg Mortenson has canceled a May 3 speaking engagement in Massachusetts, citing health concerns. 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: 60 Minutes