31.   But fossils are a new frontier.

32.   But now Mexican workers are finding new frontiers, responding to a demand for cheap labor in parts of the United States far from its southwestern border.

33.   But that concern has shifted to a new frontier.

34.   But so far, there are few guidelines to follow as the nation crosses this new frontier, as the commission called the Web.

35.   But sometimes they last long enough to lure a would-be cybernaut to a new frontier.

36.   But with the new findings, the discovery team and other scientists said Wednesday, the search for extrasolar planets crossed a new frontier of expectations.

37.   By promoting this futuristic global communications network, Gore has won approval from the computer-inclined who envision tapping into new electronic frontiers in cyberspace.

38.   Bypassing computer keyboards and speaking data directly into computers is a new frontier along the information highway.

39.   By expanding the doctrine of universal jurisdiction for crimes against humanity, the case opens a promising new frontier in the evolution of international criminal law.

40.   CD-ROM is its new frontier.