81.   Scientists have now discovered yet another reason sex can kill, at least in the case of a favorite laboratory creature, the fruit fly.

82.   Scientists long ago discovered two mouse strains that were interesting because they were small.

83.   Scientists discovered for the first time three large planets spinning around a star.

84.   Scientists have discovered a new gene that probably influences the growth and progress of breast cancer tumors.

85.   Scientists have discovered molecular causes of appetite and satiety, unraveling elaborate chemical pathways that control how much animals, including people, eat.

86.   Scientists have discovered new nerve cells sprouting deep within the adult human brain, undercutting the ancient biological dogma that dead brain cells can never be replaced.

87.   Scientists have discovered sitting behind the wheel can also result in falling sperm counts.

88.   Some years ago, scientists discovered that swans will follow an ultralight airplane.

89.   Tamoxifen belonged to Zeneca Pharmaceuticals, the British company whose scientists had discovered it.

90.   Thanks to the human-genome project, scientists have discovered a new genetic defect.