Here are some useful internet web links: (Be sure and hit refresh to see the latest links)

Carbon Dioxide Atmospheric Concentration Watchpage.

List of Elements with Ionization Potentials

List of all known elemental isotopes

Chart of Nuclides from Brookhaven National Laboratory

NOAA Global Warming FAQs

CrystalMaker Software Site

Google SketchUp Software Site

NASA Mars Rover Website

How a doorbell works: applications of solenoids and magnetic materials

Some Links on Group Theory:
Wikipedia: Molecular Symmetry
Wikipedia: Character Tables
WebQC
Rutgers
USC Upstate
SIU
Ammonia Vibrations
Nitrous Oxide Vibrations