Thesis: The amount of sun people receive affects their mood. A young woman lies asleep on a cold, overcast winter morning. At 4 A.M., a faint incandescence radiates from a light bulb placed near her bed. The light gradually gains intensity and covers until 6 A.M., when the woman awakes. She had just experienced a simulated dawn of a new day. After being treated with this for several days, the woman's annual winter depression slowly goes away. Does this mean that the less sun you get the worse you feel, or perhaps the more you get the b ....