11.   But experts wonder if their advice would be believed, even if it came in time to avert a counterstrike.

12.   But it is also possible for turbulence to do damage to a plane, and some safety experts wonder if damage might have gone undetected.

13.   But many art experts wonder if he was not exaggerating the damage, perhaps to take the heat off the search for the painting.

14.   But now that Giuliani has announced his withdrawal from the race, publishing experts wonder if the books have lost their urgency and are doomed to being ignored.

15.   But industry experts wonder whether the similarity will translate to sales.

16.   But now that Giuliani has withdrawn from the Senate race, publishing experts wonder whether the books have lost their urgency.

17.   But rank-and-file members had already become depressed and disillusioned, and many political experts wondered Friday whether the Greens would be willing to concede even more to industrial interests.

18.   But some experts wonder if the U.S. position is shortsighted.

19.   But some experts wonder how far Europe will go to overcome the fragmentation in its stock trading.

20.   But some food safety experts have wondered how best to do that without raising levels of chemicals known as amines that have been linked to cancer in animals.