Web sites introducing metallurgy and materials engineering

I an giving a talk to a group of high school students about materials science and engineering. It will be useful to have a list of
interesting web sites for them to visit. The following list shows what I have so far. Can anyone suggest more sites that would be interesting at an introductory level?
Discovering Materials Science, www.mse.cornell.edu/materials_science_discovering/index.html
Career Resource Center for Materials Science and Engineering, www.crc4mse.org/
IOM3 Materials Careers (UK), www.materials-careers.org.uk/
The A to Z of Materials, www.azom.com
Matter, www.matter.org.uk/
Key to Metals, www.key-to-metals.com (See articles)
Key to Steel, www.key-to-steel.com (See articles)
Virtual Materials Science Center, www.martindalecenter.com/GradMaterial.html
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Pittsburgh Pete
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A bit specialised perhaps but TWI joinit :- job knowledge for welders, can be useful.
http://www.twi.co.uk/j32k/search?Action=newSearch&fileNameV=jk !
Microscopy, a bit boring. http://www2.umist.ac.uk/material/microscope/zefold/zeus1e.htm
General science video not much materials stuff. http://www.vega.org.uk/series/bysubject/index.php
Some steel stuff, uses Macromedia Flash, my most hated format. http://www.coruseducation.com/learningzone.asp
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TWI link needs "!" at the end to work!
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David: Thank you for the links. I found another good one, it is the Materials Science & Technology Online page from the Norfolk State University and NASA Langley (VA) research center. See http://mst-online.nsu.edu
Pittsburgh Pete
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