Authorities say a Greyhound bus heading to Ohio collided with a tractor-trailer on Interstate 80 in central Pennsylvania, killing a woman, critically injuring four other people and sending dozens to the hospital. Investigators say the crash occurred at around 1:45 this morning. Greyhound officials say the Cleveland-bound bus originated in New York City. Authorities say 45 of the 50 people on board, including the driver, were taken to five local hospitals. Greyhound says the bus driver has been with the company for more than 12 years.