About David Burkus results of 5,644
65:24![NASA and the Holy Grail: Pastor Mike [CC for Hearing Impaired]](https://img.youtube.com/vi/4xjsnr5xDC4/hqdefault.jpg)
63:36![Jeff Church: The Wave of Social Entrepreneurship [Entire Talk]](https://img.youtube.com/vi/tWhhvZGJ004/hqdefault.jpg)
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