<http://schema.org/about>
"A word of warning. You probably won\u2019t get rich working for the planet. Not in a monetary sense, anyhow. But you\u2019ll rewarded with other riches, that are beyond any price. Caveats aside, this book can put you in touch with the nearly 300 organisations,"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/working-with-the-environment-book.html>