21.   Hot plastic tends to return to its original shape, and since PET bottles are shaped by blowing them up like balloons, heat makes them shrink.

22.   I call him to ask why heat makes the human body feel so lousy.

23.   It seemed all that heat made USC wide receiver Larry Parker dehydrated.

24.   Of course, heat outside can make heat inside more intense.

25.   Some congressmen and antismoking groups said the proposal lets cigarette makers off too easily at a time when political heat has made the industry vulnerable in bargaining.

26.   Somehow heat makes a viewer less discriminating, so a little trash is OK, too.

27.   The heat apparently made Sunday a bigger challenge for Nomo, the Japanese right-hander acquired recently from the Los Angeles Dodgers.

28.   The heat makes the stamens exude pollen like toothpaste squeezed from a tube.

29.   The heat generated makes the enterprise look like the Great Smoky Mountains.

30.   The heat may make the adhesive even more gummy, making it tougher to remove.