CNN.com - Travel Computer glitch delays United flights at O'Hare Hundreds of passengers lined up Thursday outside the United Airlines terminal at O'Hare International Airport after a computer outage delayed incoming and outgoing flights, the airline and witnesses said. Travel Snapshots: Capturing the American spirit In honor of Independence Day, we asked iReporters for photos that capture the spirit of the country and the holiday. Please send your photos of Turkey for next week's Travel Snapshots gallery. Suit: Toxic plane air sickens flight attendant The last time Terry Williams can remember being headache-free was in December. A chronic migraine has plagued her ever since. So have balance and vision problems, a tremor in her left arm, a prickly sensation in her feet and a loss of childhood memories. 13 new sites added to World Heritage list Intrepid travelers have a few more destinations to add to their list of must-sees after the annual update of The United Nations Educational Scientific and Cultural Organization (UNESCO) World Heritage list. Grill, baby, grill: BBQ competitions are hot Of all the great sports of summer, only one leaves competitors covered with sauce, smelling like smoke and clutching trophies with charcoal under their fingernails. America's healthiest beach and lake getaways We know your summer vacation time is precious: You want to land where you can truly relax, breathe fresh air, get in some exercise and eat well -- without breaking the bank. That's why we teamed up with a panel of travel and health experts to help us find the healthiest of the nation's most popular beach and lake towns. Kids in first class: Should we or shouldn't we? The most embarrassing moment of my life? That's easy. How do people survive airline crashes? Reports of a lone child having survived Tuesday's crash of a Yemenia Airways flight in the Indian Ocean have people wondering: How does anyone survive a plane crash? Disney adds robotic Obama to attraction He looks like President Barack Obama, speaks like him, and even gestures like him, but he is not exactly the president of the United States.