PBS Cool careers http://www.pbs.org/safarchive/5_cool/53_career.html
Science Career Information http://www.the-aps.org/education/k-12misc/careers.htm
Science Career Information http://www.careersmarts.com/science.htm
NASA for high school students http://www.nasa.gov/audience/forstudents/9-12/features/index.html
National Geographic http://www.nationalgeographic.com
Element Info http://www.chemicalelements.com/
Element Info http://www.webelements.com/
Visual Periodic Table http://www.chemsoc.org/viselements/pages/pertable_fla.htm
GIZMOs http://www.explorelearning.com