31.   But as science advanced, researchers had trouble getting their technologies out of the lab.

32.   But Finkelhor, the University of New Hampshire expert, says researchers would have to consider several other possible explanations.

33.   But at the same time, he said, researchers have had difficulty confirming her claims.

34.   But before that second chance, the researchers had them read aloud a list of words, ostensibly to rate them for ease of pronunciation.

35.   But Hoffman said researchers had compiled material suggesting that the most powerful encryption software was now readily accessible internationally.

36.   But in recent years, researchers have unearthed documents that are helping them pry far more detail from the images on rock faces.

37.   But Karen Burns, a forensic scientist with the University of Georgia, says researchers will have to take great care in exhuming the boxes.

38.   But other researchers have uncovered provocative evidence that there are gender-specific responses to pain.

39.   But researchers have many more questions to answer.

40.   But researchers may have anthrax stock and not be registered with the CDC, she said.