41.   All the Astros have to do is push the button.

42.   Although Arafat has routinely condemned attacks on civilians inside Israel, he has also used language about the fight to win an independent Palestine that pushes many buttons.

43.   But Allen, a former academic researcher who did graduate work in psychology at Columbia, knows which buttons to push and which to leave delicately untouched.

44.   But a new generation of telescopes is making star-finding as easy as pushing a button.

45.   But do they worry that the coach who pushed their buttons left a few in place?

46.   But he does know how to pull political levers and push political buttons, and for UMass nothing could be more important.

47.   But figuring out which buttons to push is not necessarily easy.

48.   But instead of pushing buttons, the caller will simply say which option he wants.

49.   But Mason did not begin this season by pushing a button.

50.   But in our boring century, you just keep pushing a button and nothing happens.