<http://schema.org/alternativeHeadline>
"Scientists may have solved an old mystery about how mercury gets into ocean fish, but their findings offer a dire outlook for the toxic metal's prevalence in seafood."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/food/healthy-eating/blogs/mercury-will-rise-in-pacific-fish-study-finds>