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This video was taken by the crew of Expedition 30 on board the International Space Station. The sequence of shots was taken December 29, 2011 from 20:55:05 to 21:14:09 GMT, on a pass from over central Africa, near southeast Niger, to the South Indian Ocean, southeast of Madagascar. The complete pass is over southern Africa to the ocean, focusing on the lightning flashes from local storms and the Milky Way rising over the horizon. The Milky Way can be spotted as a hazy band of white light at the beginning of the video. The pass continues southeast toward the Mozambique Channel and Madagascar. The Lovejoy Comet can be seen very faintly near the Milky Way. The pass ends as the sun is rising over the dark ocean.

cool video on the secret life of plankton

great video of Adam Savage explaining Fizeau's measuremnt of the speed of light. 

recommended site with videos an interactive resources for studying biology

An interview with the mathematician and geneticist behind the Human Genome Project and the Broad Institute Really great video describing how lander fell in love with bio. 

Excleent library of direct measurement videos for video analysis. 

great video from NYT on what is life? and effort to create life in a test tube, using RNA. 

huge archive of physics videos on every topic

Great library of physics videos and demos

This video is amazing

Awesome video of space shuttle launch from booster POV

funny video for introducing macromolecules

excellent video that explains how mems accelerometers work

beautiful video of nature footage with David Attenborough narrating wonderful world

Awesome video that explains why plants often (but not always) have leaves that grow in fibonacci patter

nice video of rube goldberg machine set to music by OK GO.

post contains very interesting video simulation showing electrons in a semiconductor responding to the applied voltage. 

video on how to use stereo microscope

outstanding video that explains computational simulation of a galaxy. 

I was surprised to discover, however, that "some exotic animal species that are endangered in Africa are thriving on ranches in Texas, where a limited number are hunted for a high price." Texas hunters have saved several endangered African species, unfortunately for the animals, the story does not end happily. Video from 60 Minutes below-some excellent material on incentives, ethics and conservation for classroom discussion.