91.   But Kahn said what surprised researchers was how long-lasting the effects were.

92.   But researchers are still willing to generalize.

93.   But Leon said researchers were surprised when meat production showed up second only to vehicles in terms of environmental destruction.

94.   But researchers are confident the technology will work.

95.   But researchers are hesitant to declare victory.

96.   But researchers have been unable to make the jump from there to proving that words flashed on a screen could influence behavior in any significant way.

97.   But researchers were slow to test the hypothesis on humans.

98.   But researchers were surprised to find that it can also cause pancreatic cancer.

99.   But some researchers are skeptical that brain imaging can provide all the answers.

100.   But other researchers were reluctant to link the crime to such widely used drugs.