Scientists found an ultraviolet ray appeared to change how men and women felt about romantic partners.
Similar halos are also sometimes seen around the sun.
"This halo around the moon is insane," one Twitter user wrote.
Natural sunlight may be an effective of certain materials, said the authors of the study.
The research did not specify the intensity and wavelength of the UV light used in the experiment—and it's also not known whether the sunlight imitated the actual natural sunlight during the summer.
The state conservation department is working to eradicate the invasive plant.
Sunlight's Web Integrity Project says as many as 26 documents for Training of Asylum Officers were pulled from USCIS's main pages and "cannot be found anywhere else on the site."
Scientists believe a lack of the vitamin could be associated with abdominal fat storage.
In the U.S., 12 to 19 million people get sick from waterborne infectious disease each year.
The sun could shine for as long as 16 hours in some parts of the U.S.
The shade ball project is attempting to keep water from evaporating in California's reservoirs.
The developer claims artificial skylight 'tricks the brain' into believing it's the real thing.