61.   And the Dallas Cowboys today stand as the most serious threat to his desire.

62.   And the open source movement faces more serious threats.

63.   And, in some areas, guerrilla attacks pose a serious threat.

64.   Antibiotic resistance, the scourge of hospitals and nursing homes worldwide, is now a serious threat to children as well.

65.   As a result, air and water pollution remain serious threats to public health.

66.   As long as North Korea is ostracized, hungry and heavily armed, it is a serious threat to stability in Asia.

67.   As suburbia sprawls into the Northern California mountains, pumas are posing serious threats to humans.

68.   At least partly as a result, Gore has a narrow, single-digit lead over Bush that makes a Nader ascendancy a serious threat.

69.   Bidzos conceded that the FBI faces a serious threat from criminals using unbreakable codes to send messages.

70.   Biological warfare and genetically engineered viruses represent the most serious threat to US national security interests since the Cold War.