21.   He wants to open up vast new tracts of federal lands for oil and gas drilling.

22.   His conversation hopscotches over vast tracts of intellectual and artistic and popular landscape, with sudden detours and then detours from other detours.

23.   In addition to the city, the license covers a vast tract that includes chunks of New York State, New Jersey, Connecticut, Pennsylvania and Vermont.

24.   In Marin County years ago, voters ousted a county board that had agreed to open up a vast coastal tract to builders.

25.   Its vast tracts of housing projects inspired the nickname Brick City.

26.   National parks, national wildlife refuges and vast tracts of woodlands and rangelands all fall under the purview of the Department of the Interior.

27.   Officials also pointed to a wider use of clear-cutting operations that have laid bare vast tracts of forest.

28.   Once considered uncommon, blood pythons have benefited in recent years as vast tracts of rain forest have given way to oil palm plantations.

29.   Peter Pfendler, a rancher and conservationist, is seeking federal approval to release condors on a vast tract he owns there.

30.   Residents are particularly indignant over how military officials hold on to vast tracts or resist efforts to develop private property.