21.   Then he employed a cruelly drastic writing style uncommon in the rarefied air of academia.

22.   They obviously could not stand the rarefied air of a winning record.

23.   This is rarefied air, an exclusive club.

24.   Tiger Woods stands on the precipice now, right where he likes it, in the rarefied air that surrounds great pressure and great achievement.

25.   Unaccustomed to that rarefied air, the Jets took one big gulp and fainted dead away.

26.   While wins and points mean nothing other than team confidence down the stretch, the Red Wings are approaching rarefied air in several categories.

27.   Why would anyone want to stay in an airtight room suffused with enough nitrogen to duplicate the rarefied air of a mountaintop?

28.   But Jordan denied playing in the rarefied air of the Wasatch Mountains was a factor.

29.   The rarefied air around Michael Jordan these days is rife with musk, incense and cognac.

30.   The winners of the Nobel Prizes in science may have their heads in some rarefied air, but their feet are on the ground.