51.   Alibek, who works as a private consultant, has written a highly classified study of the Soviet biological weapons program for the U.S. government.

52.   All biological weapon charges were dropped against two men arrested by federal authorities in Nevada last month in an anthrax scare.

53.   Alibek said that some Russian microbiologists are reportedly teaching students from rogue states about biological weapons.

54.   Alibek has his critics, ranging from nationalist Russians who consider him disloyal, to Americans who blame him for working with biological weapons in the first place.

55.   Alibek has said he decided to speak out publicly to fight the spread of biological weapons and to seek absolution for having made them.

56.   All around the biological weapons plant it seeped from, people went about their business, tending to stores and chatting in the streets.

57.   Both coincided with increased coverage of biological weapons.

58.   Bush walked away from a biological weapons treaty that would have violated the Fourth Amendment, in addition to national security and common sense.

59.   But a couple of years ago, a group of new scientists came tothe Defense Advanced Research Agency and started developing this new direction in biological weapons defense.

60.   But because biological weapons are remarkably cheap, easy to make and easy to use, it could happen.

a. + weapon >>共 559
automatic 9.86%
chemical 9.65%
heavy 7.50%
biological 5.79%
illegal 3.97%
new 2.94%
concealed 2.46%
banned 1.73%
suspected 1.57%
deadly 1.48%
biological + n. >>共 486
weapon 27.29%
agent 5.87%
parent 4.71%
attack 3.38%
father 3.18%
mother 2.12%
diversity 1.78%
research 1.47%
material 1.37%
child 1.23%
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