Let the (Sun) Light In
We know that sunlight has mood-boosting benefits. Studies also show that people with higher levels of vitamin D, called the “sunshine vitamin,” have a lower risk of disease. And now a new study published in the journal Microbiome revealed that the sun offers another perk: it can kill disease-causing bacteria. The study, conducted by researchers at the University of Oregon, set up 11 identical dollhouse-size rooms. Some of the rooms were exposed to daylight through regular glass, some rooms were exposed to ultraviolet light only, and other rooms were kept completely in the dark. The miniature rooms were then filled with dust to replicate an actual living environment and placed outside for 90 days, after which the rooms’ bacterial levels were tested. The rooms exposed to daylight had fewer germs than their darkened counterparts. In fact, the sunlit rooms had 50 percent less viable bacteria. However, researchers did not expect the UV rooms to perform as well as they did. In fact, the rooms exposed only to UV light fared even better than the naturally lit rooms, as they had the lowest bacteria levels of all. That said, researchers still do not know what the optimum level of light is — the perfect amount for killing germs, that is — but they hope further studies will yield this information so architects and builders can incorporate this information into future designs.
54% of dog owners would actually consider ending a relationship if they felt like their dog didn’t approve of their love interest. —rover.com