1.   Some political scientists think it is an overused and seriously flawed conceptual framework for political analysis.

2.   It had been raised as a possibility decades ago, then dismissed, something that serious scientists thought was simply not going to happen anytime soon.

3.   Some scientists think that the infection has spread from dogs carrying canine distemper virus.

4.   And some scientists think that we cannot possibly understand why we get sick today unless we examine what we ate and how we lived back then.

5.   And once established, many scientists now think, life may be very hard to stamp out, even when conditions change.

6.   And where there is water, scientists think, there is some prospect of finding life.

7.   And while modern immune suppressants have made human-to-human transplants commonplace, some scientists think xenotransplants will require new drugs or strategies.

8.   Apparently, these same scientists now think Viagra might improve the sex lives of women, too.

9.   Angina occurs when the heart muscle receives less blood than it needs, and scientists thought the laser treatment might improve blood flow.

10.   Anyway, some scientists think evolution, whatever that is, may be influenced by cosmic rays that result in genetic mutations.