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See video Neil deGrasse Tyson - Astronomy, Sociology, and Scientific development

An inspirational lecture from Neil deGrasse Tyson on a wide range of topics including physics, astrononomy and science funding.

587 6.78
See video 12 year old girl gives moving speech to the UN

"Severn Suzuki" Organization of Children in Defence of the Environment, during the ECO 92 - United Nations Conference for Environment and Development.

965 5.72
See video Sodium Acetate Sculptures (Hot Ice)

This experiment demonstrates instant crystallization in a supersaturated solution of Sodium Acetate and water. A second demonstration shows how to make ice sculptures (or pillars) with Sodium Acetate.

8770 6.65
See video Third 2008 Presidential Debate - McCain and Obama (Full Video)

Full Video of the third and final 2008 presidential debate between Senator Barack Obama and Senator John McCain.

1659 5.21
See video Moebius Transformations Revealed

A short film depicting the beauty of Moebius Transformations in mathematics. The movie shows how moving to a higher dimension can make the transformations easier to understand.

950 5.47
See video History of the Internet

An animated documentary of the history of the Internet from 1957 to 2009. Subtitles are available in Bulgarian, Chinese, English, French, German and Greek.

1939 5.80
See video Einstein explains his famous formula E=mc²

"Mass and energy are both but different manifestations of the same thing...very small amounts of mass may be converted into a very large amount of energy and vice versa."

904 5.82
See video Martin Luther King "I have a dream"

The full version of the historic speech by Martin Luther King, Jr.

5432 6.02
See video How the Differential Gear works - 1930s video

An excellent engineering video on how the differential gear works in an automobile, allowing each of the driving wheels to rotate at different speeds. This was an important innovation for cars to be able to smoothly turn corners.

2373 6.05
See video The Large Hadron Collider (LHC) explained

An animation explaining how the Large Hadron Collider works. It is the largest and most complex scientific instrument ever built.

1204 5.77
See video Laminar Flow

Video showing Laminar Flow and demonstrating fluid flowing in layers. The flow is "smooth" in contrast to turbulent flow which is "chaotic" .

550 5.84
See video Mister Rogers defending PBS to the US Senate

In 1969, Fred Rogers appeared before the United States Senate Subcommittee on Communications and spoke about the need for social and emotional education that public television provided.

739 6.01