A number of recent scientific studies suggest that nighttime exposure to light is one factor in the increased incidence of breast cancer. With light pollution invading bedrooms at night, as well as more nocturnal lifestyles that keep people awake in artificial light during prime hours of darkness, it may be that people are simply not getting enough of a critical hormone.
About Brianne Goodspeed
Posts by Brianne Goodspeed:
Mayor Richard Daly might be determined to transform Chicago into the greenest city in America (see main story), but his tree-planting initiatives, building improvements and promises to secure 20 percent of the city’s electricity from renewable sources might not be enough to outshine cities such as Seattle and San Francisco.