Travel is associated with a nearly three-fold increase in the risk of deadly blood clots that form in the veins, and your risk of getting a clot grows with the length of your trip, a new study finds. Experts blame a combination of factors including dehydration and hours of sitting in cramped conditions on long-haul flights.

Keith Wright says he is bipolar and may have been off his medication when he stripped naked on a flight from Charlotte to Los Angeles. His antics, along with an unrelated medical emergency, lead to the flight being diverted to New Mexico.

A computer problem involving United Airlines' ticketing system temporarily grounds its planes at Chicago's O'Hare International Airport, leaving travelers to stand in long lines at the opening of the Fourth of July weekend. At least some of the computers are back up and running now.

Authorities are searching the Gulf of Mexico for a passenger who apparently fell from the Carnival cruise ship Holiday, right, which was traveling from Mobile, Ala., to Cozumel, Mexico. The passenger is believed to have gone overboard late Monday.

The Coast Guard rescues a 46-year-old man who fell off a Carnival cruise ship, finding him clinging to a buoy in the waters near St. Petersburg, Fla. A spokesman says it's not clear yet how the man fell off the ship.