URL	Title	Id
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_earths_magnetosphere.html	Chapter 1. Earth's Magnetosphere	513a9c64b11c0fe35a000001
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_earths_magnetosphere_dlap.xml	DLAP questions	513a9c64b11c0fe35a000001