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Summary: A fast-paced, yet catching video that gives a brief overview of various scientific views regarding theories of Realism and Materialism, which were popular around the turn of the 20th Century. With the advent of Quantum Mechanics in 1925, those theories were literally put to the test by the likes of Albert Einstein and Erwin Schrödinger. An animated version of the Schrödinger experiment is included with explanations by Michio Kaku, Theoretical Physicist. Amazingly enough, the video concludes by pointing to an architect behind the design of Quantum Mechanics; an Intelligent Design, if you will. Quality: The content may be a bit much at first, but students will enjoy the quick pace, animations, and graphics associated with this lesson on Quantum Mechanics. This is a well done video, however, because it covers so much in such a short time, it would be important for students to have some foundational knowledge of these concepts before presenting this video as it would be best as a supplemental source.

Summary: Put out by NASA's Glenn Research Center, this website discusses what we know and don't know about science as it relates to the implications of time travel. What we know at this point in time (no pun intended), is that faster than light travel is not possible. The site also mentions other theories such as wormholes and quantum paradoxes, which have not been proven yet as viable options. The site adds that time travel is considered far more impossible than light travel. Quality: Having been complied by scientists at NASA's Glenn Research Center, this website is thorough and credible in its discussion of the possibility of time travel and the applicable Rules of Special Relativity. The site also includes some graphics to aid in understanding the basics of Special Relativity and links to other NASA related topics for further study.