When Union spies steal Johnnie Gray's (Buster Keaton) beloved locomotive, the General, he pursues them with the aid of his fiancé, Annabelle Lee (Marion Mack) straight through enemy lines. One of the most revered comedies of the silent era.

From the first smartphones to social media, eBay to emojis, the ideas that dominate our lives were born at a 1989 tech startup you've never heard of. 'General Magic' is a tale of how a great vision and an epic failure changed the world.

Northeast China, early Northern Song dynasty, AD 986. The Khitan army takes its revenge for a past massacre, abducting General Yang Ye (Adam Cheng) and leaving his wife and seven sons to rescue him - and fall into their deadly trap. Led by the first son (Ekin Cheng), the seven - two of whom have never seen combat - set out with a small band of fighters to face an army of thousands, brave the treacherous Wolf Mountain, face the nemesis of their shared...

When Patriot mail falls into the hands of the British, James and Sarah agree to carry important letters safely to New York. On the way they evade British troops and get help from the New Jersey Committee of Correspondence. They learn of how deep the resistance movement is and that it is even involved in making sure communication within the colonies continues.

Marty is finally able to enter the Temple of the Iron Soul and confronts his destiny. In the midst of all that the General has finally awakened. Is Marty too late in saving the world from the foreboding evil that is to come?

We have seen how perceptions influence the way we view the world. In this final episode, dig into the research that shows how perceptions influence our health and well-being. Put everything you have learned together to see how stress, thinking patterns, mindset, exercise, and close relationships all affect how you think about yourself -- and the world.

Special relativity is limited to reference frames in uniform motion. Following Einstein, make the leap to a more general theory that encompasses accelerated frames of reference and necessarily includes gravity. According to Einstein's general theory of relativity, gravity is not a force but the geometrical structure of spacetime.

Einstein's greatest triumph was his general theory of relativity, which built on special relativity and led to a radically new understanding of the geometry of space and time. Einstein followed a rocky road to this breakthrough, with mistakes that hampered his progress and almost gave the honor of discovery to a rival.

Flying for sport, business, agriculture or photo survey, a fleet of mostly single-engine planes comprises the fastest growing segment of aviation. General aviation is usually not state of the art, but rather clever uses of existing affordable technology.

Our journey continues with the westward expansion of American English, as the New England dialect spreads across the North, the South extends to the Southwest, and people in the middle increasingly intermingle. Along the way, dialect mixing and leveling lead to increasing standardization, or at least the ideal of a single, uniform standard, and "General American English" is born.