Rare is the inspirational, spontaneous, transformative moment shared among 20 million people. In the summer of 2010, people around the world were moved by the sighting of a double rainbow--almost a triple rainbow--"all the way across the sky" in Yosemite National Park. Caught on video and posted to by YouTube by Paul Vasquez in January 2010, the…

When it comes to helping others learn, there is a simple piece of advice that is often recommended to educators: Show! Don't tell. While appealing to the visual learning style of an audience is always a good idea, there is a growing expectation for more than just static images. They want video, which can deliver more dynamic presentations with…