41.   One and a half million youngsters head back to class on Sunday.

42.   Tensions have risen over the past year, with the government demanding that the Wa head back toward their old strongholds near China.

43.   The British Thrust SSC team heads back to the desert Thursday after a day of assessing the fastest car in the world.

44.   The champion calmly stalked the Uruguayan, frequently snapping his head back with jabs.

45.   The ship may be forced to turn around and head back to Liberia.

46.   The U.N. chief weapons inspector heads back to New York after two days of largely disappointing talks in Baghdad.

47.   They claim the penguins crane their heads back so far to watch planes and helicopters buzzing overhead that they lose their balance and tip over.

48.   What this lap belt does, if you try to go down, it tightens up on the lap belt and pulls your head back.

49.   George and Barbara Bush head back to the White House Monday -- but just for a visit.

50.   Fresh workers head back down street leading to the federal building to replace them.