<http://schema.org/about>
"Since the 1970s, tree death rates have doubled on the west coast, according to research appearing in the journal Science. And the causes seem to be stress from drought and global warming. After decades of study, scientists have"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/forest-death-rates-doubled-on-the-west-coast.html>