61.   While everyone has been examining the effect of state welfare systems on the poor, strangely no one has looked at the effect of parental welfare on rich families.

62.   Previous studies have examined the effects of melatonin on sleep with mixed results.

63.   But they should go through a public and rigorous exercise to examine the effects of a freeze.

64.   Most of that research, however, has examined the effects of mental stress on the human heart or the tendency of heart patients to develop depression after surgery.

65.   Researchers examined the effect of adding ipratropium bromide to the standard emergency room therapy for asthma attacks, albuterol and steroids.

66.   The government examined the effect of pesticides on ranch hands Monday, as it has been doing for some time.

67.   The two-phase research project was aimed at examining the effects of NAFTA on American businesses.

68.   They will spend two weeks in orbit aboard a spaceship before returning to Earth, where scientists will examine the effects of weightlessness, it said.

69.   In addition, the astronauts will examine the effects of microgravity on plants.

70.   Also, the astronauts will examine the effects of microgravity on plants.