<http://schema.org/alternativeHeadline>
"Lost in the hoopla surrounding the search for life beyond Earth is the simple fact that scientists can't agree on what life is to begin with."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/stories/lifes-great-mystery-what-exactly-is-life>