61.   The Bush administration has taken the United States out of international programs designed to reduce the likely causes of global warning.

62.   The committee instead singled out wartime stress as a likely cause of the ailments.

63.   The Federal Bureau of Investigation and the National Transportation Safety Board have indicated that mechanical failure was the most likely cause of the explosion.

64.   The likely causes of the mass extinction that wiped out the dinosaurs are also duly considered.

65.   The investigation of the accident has not been completed but military sources say the likely cause was human error.

66.   The more likely cause of his abrupt fall was his outspoken campaign against the nationalist and restrictive economic policies Mahathir has been promoting.

67.   The predicted warming, if it materializes, would likely cause widespread climatic disruption, the U.N. panel said.

68.   The production seemed thrown together and lacking inspiration, and the likely cause was the jokey and intrusively busy stage direction of David McClintock.

69.   Their mathematical model, which is partly based on the behavior of thermonuclear explosions, suggests that shock waves are the likely cause of sonoluminescence.

70.   There are some less likely causes of troubling night sweats, including certain medications, a heart attack or heart disease, lymphoma and AIDS.