51.   But the new findings substantially strengthen the evidence and allow a better estimate of how much is present and how it is distributed.

52.   But similarities aside, the importance of the new findings is that they seem to contradict in several ways the longstanding theory of aging developed by evolutionary biologists.

53.   But the likelihood of a past ocean has certainly increased dramatically as a result of the new findings.

54.   But the new finding makes it far less likely that the United States will ease up on the North.

55.   But the new findings show that there are likely to be many variations of the disease, stemming from many different causes.

56.   But some archaeologists may not readily accept the new findings.

57.   But the new findings add a significant extra detail by showing that a much smaller group was responsible for producing most of the present European population.

58.   But the new findings are certain to spawn many hypotheses for scientists to test.

59.   But the new findings underline that even if given late in pregnancy, AZT may make a difference, she said.

60.   But the new finding, if it bears out in further research, could help scientists design a powerful blueprint for new therapies.