<http://schema.org/about>
"Back when I was working in the lab, weeks could go by when I didn't see the daylight hours. Without question, during those same weeks I stayed up late by the glow of my computer screen or television- It was self imposed, and always left me tired and"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/light-pollution-can-kill.html>