<http://schema.org/alternativeHeadline>
"The algal blooms occur fertilizer runoff feeds the runaway growth of cyanobacteria. This algae sucks up oxygen and can emit toxins that injure humans and animals."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/beach-bummer-toxic-slime-will-hit-lake-erie-again>