31.   The Grafton, Mass. company uses heat to forge metal into landing gear, engine parts, and frames for the aerospace industry.

32.   The key to mastering many cooking techniques is to use higher heat than you think you should.

33.   The seams are then sealed using heat from a torch rather than the smoky, messy hot tar used on asphalt roofs.

34.   Their company imports woven hat bodies and stamps them into shape with presses that use steamed heat.

35.   The waste heat can be used to heat the carbon monoxide, which is then mixed with water.

36.   Thermal generators, which use the heat of radioactive decay to make electricity, are still working, too.

37.   Use heat to soften the adhesive enough so the tiles can be lifted.

38.   Unlike other color printers, the Panasonic model does not use ribbons or inks, instead it uses heat to bond the color directly to the page.

39.   Use indirect heat instead.

40.   Use medium heat to bring the milk and sugar to a rolling boil while stirring constantly.