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Unexplained Mysteries

Delve into the myths, misconceptions, truths and amazing mysteries of our unique universe. Could life exist on Mars? Is time travel possible and does Einstein's theory of relativity support it? Is there  a companion dark star to our sun and could it pose a threat to earth? Learn about the spark that lit the big bang. Take a journey from science fiction that predicted all these things, to the scientific reality of what they mean to us in the ever-changing universe.

Unexplained Mysteries. (2011). The History Channel website. Retrieved 6:14, May 1, 2011, from http://www.history.com/shows/the-universe/episodes/season-2.

 
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Light Speed

According to the laws of physics we can never travel faster than the speed of light...or can we? Light speed allows us to see things instantly here on Earth, and shows us the entire history of the universe going back nearly 14 billion years. Learn all about light speed, the ultimate constant in the universe and discover ways scientists envision breaking the "light barrier" which may be the only way the star travel of our imaginations ever comes to reality.

Light Speed. (2011). The History Channel website. Retrieved 7:42, May 1, 2011, from http://www.history.com/shows/the-universe/episodes/season-4.

 
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Out Of Africa

Alice Roberts introduces the notion that genetic analysis suggests that all modern humans are descended from Africans. She visits the site of the Omo remains in Ethiopia, which are the earliest known anatomically modern humans, and visits the San people of Namibia to demonstrate the hunter-gatherer lifestyle. In South Africa, she visits Pinnacle Point, to see the cave in which very early humans lived. She then explains that genetics suggests that all non-Africans may descend from a single, small group of Africans who left the continent tens of thousands of years ago. She explores various theories as to the route they took. She describes the Jebel Qafzeh remains in Israel as a likely dead end of a traverse across Suez, and sees a route across the Red Sea and the around the Arabian coast as the likelier route for modern human ancestors, especially given the lower sea levels in the past.

 
 

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