a free Mac app that allows you to easily download videos from YouTube and hundreds of other websites for offline viewing
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ViDL for Mac
WindowSwap
Look through someone else’s window, somewhere in the world, for a while.
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Pink Floyd – The Story of Wish You Were Here
Our Solar System
Instead of 3D visuals, this video focuses on the fascinating information about the makeup of our solar system with a flat, illustrative design. Well worth the seven minutes.
The guy who created Doom and Quake teaches you physics
John Carmack explains the physics behind the games he builds.