21.   Landscape architects, she said, believe their role is to preserve the environment.

22.   Looking to save money and to preserve the environment, many hotels are asking guests to reuse their towels and sheets.

23.   Plonin and Davidovsky say they are on a mission to highlight the need to preserve the environment, folk traditions and, most important to them, workhorses.

24.   So does the obligation to keep Social Security and Medicare solvent, educate the next generation, preserve the environment and carry out other government services.

25.   Supporters see narrow-minded self-interest blocking a project that could preserve the environment, promote health and help people connect.

26.   The goal of preserving the environment, Gore has written, will be the fundamental organizing principle of society in the coming century.

27.   These vacations are less about relaxing than about preserving the environment.

28.   They ate sprouts, defied authority, preserved the environment and expanded their consciousness.

29.   These vacations are less about relaxing than they are about preserving the environment.

30.   They are a well-educated lot, modest, public spirited, committed to preserving the environment and intensely proud of their ethnic heritage.