I have a fascination with material science and how its progressing. Our society's success and failure to generate new materials (e.g. carbon nanotubes, graphene, etc.) will determine our ability to create the next generation of structures, spacecraft, electronics, etc.
The following video PBS's NOVA, and called Making Stuff: Stronger. Here the program description from the site: "What is the strongest material in the world? Is it steel, Kevlar, carbon nanotubes, or something entirely new? NOVA kicks off the four-part series "Making Stuff" with a quest for the world's strongest substances. Host David Pogue takes a look at what defines strength, examining everything from steel cables to mollusk shells to a toucan's beak. Pogue travels from the deck of a U.S. naval aircraft carrier to a demolition derby to the country's top research labs to check in with experts who are re-engineering what nature has given us to create the next generation of strong stuff."