Introductory web sites about materials science and 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 intorductory level?
Discovering Materials Science, www.mse.cornell.edu/materials_science_discovering/index.html
Career Resource Center for Materials Science and Engineering, http://www.crc4mse.org /
IOM3 Materials Careers (UK), www.materials-careers.org.uk/
The A to Z of Materials, www.azom.com
Matter, http://www.matter.org.uk /
Key to Metals    http://www.key-to-metals.com (See articles)
Key to Steel    http://www.key-to-steel.com (See articles)
Virtual Materials Science Center, www.martindalecenter.com/GradMaterial.html
---------------------------------
Pittsburgh Pete
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.