Researchers in Oregon set up a study of dusty, dollhouse-size rooms to compare what happens in rooms exposed to daylight through regular glass and rooms kept in the dark. What they found was that the rooms exposed to daylight had fewer germs. In fact, the study showed that the lit rooms had about half the viable bacteria compared with dark rooms. Since we tend to spend so much time indoors, make sure to keep those curtains open.
How sunshine helps kill the germs in your home
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