Version 4 of the popular video series "Did You Know" has been launched. Who does not know, here is a brief and simple description: In the videos of the Did You Know series are many interesting facts about the modern world portrayed visually.

Here is the version 4.0:

[Youtube] http://www.youtube.com/watch?v=6ILQrUrEWe8 [/ youtube]

Older versions of the videos ...

2006

[Youtube] http://www.youtube.com/watch?v=ljbI-363A2Q [/ youtube]

2007

[Youtube] http://www.youtube.com/watch?v=pMcfrLYDm2U [/ youtube]

2008

[Youtube] http://www.youtube.com/watch?v=jpEnFwiqdx8 [/ youtube]

[Via network policy , spreeblick ]

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