TED Talks
Ted: Ted Ed: How Do We Separate the Seemingly Inseparable?
Your cell phone is mainly made of plastics and metals. It's easy to appreciate the process by which those elements add up to something so useful. But there's another story we don't hear about- how did we get our raw ingredients in the...
Other
Hognosesam: Materials Metal, Wood and Plastic
This site describes building materials, their strengths and weaknesses, and how to choose the correct material for a project.