Mother Teresa's Crisis of Faith - Her secret letters show that she spent almost 50 years without sensing the presence of God in her life. What does her experience teach us about the value of doubt?
Giving Props to the New Turbos - The noisy plane once dreaded by flyers is now a quieter, quicker ride--and more efficient than jets for short-haul travel
• HEALTH & MEDICINE:
What Doctors Don't Say About Obesity - Doctors hate telling you to lose weight as much as you hate hearing it. But their silence can imperil your health
Why Facebook Is the Future - A network for teens could teach the Net to grow up