<http://schema.org/about>
"Penguin populations have been declining and shifting globally as a result of oil pollution, overfishing, guano mining (!) and increased coastal development, according to research by"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/penguins-a-threatened-ecotourism-treasure.html>