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See video Martin Luther King "I have a dream"

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

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See video Why is it Dark at Night?

Why is space dark? If we lived in an infinite, unchanging universe, the entire sky would be as bright as the sun.

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See video Arithmetic, Population, and Energy Part 2 of 8

Most people do not understand exponential growth, yet the concept is of fundamental importance. Lecture by Dr. Albert A. Bartlett, professor emeritus of Physics at the University of Colorado-Boulder.

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See video You Suck at Photoshop #4

Photoshop tutorial on Paths and Masks

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See video Fishing Spider Preys on Frogs

Fishing Spiders lurk near water and prey on fish, tadpoles and frogs. The spider rests on the water's surface with its hind legs anchored on a leaf or rock, and when it detects the vibrations of passing prey it dives into the water.

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See video First Landing on the Moon - 1969

The Apollo 11 moonlanding on July 20 1969 commanded by Neil Armstrong. Armstrong and Edwin 'Buzz' Aldrin spend a day on the surface of the moon before returning back to earth. 

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See video Open-mindedness

A very informative video about open-mindedness which answers the question - is belief in paranormal and supernatural phenomena a sign of a closed mind or an open mind?

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See video John Lloyd: What's invisible? More than you think (TEDTalks)

A talk about important and everyday things in life which are impossible to see.

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See video Non-Newtonian liquid - hole that does not disappear

A mixture of cornstarch or potato flour and water in a ratio between 2:1 and 3:2.

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See video Little Red Riding Hood For Engineers

This is Little Red Riding Hood as you have never seen before - from an engineering perspective.

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See video Photosynthesis

This animation shows the process of photosynthesis. Energy from light is absorbed by chlorophyll, exciting electrons which then pass through an electron transport chain.

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See video Steve Jobs demos Apple Macintosh in 1984 to a cheering crowd

The crowd goes wild when they see moving text and later a 3d chessboard, but the biggest highlight is when the Macintosh actually speaks. The Macintosh was revolutionary because it was the first PC to have a mouse and a graphical user interface.

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