Running the Philadelphia Marathon two years ago was one of the more inspiring and joyful community events I've ever been a part of.  Beyond just the runners, I was particularly moved by the countless thousands on the sidelines cheering everyone on and offering total positivity and support...it really felt like the City of Brotherly Love that day.  I do believe more runners = a happier world.  At any rate, this is a really cool TED talk:

Looking at technological change from the perspective of the evolution of life itself.  Really interesting.

I had seen this video once before--before the thought of teaching had even entered my mind.  It's a funny talk, and Sir Robinson's ideas certainly resonated with me, as someone whose exposure to education philosophy was limited to Seth Godin.  I was recently asked to watch this video for one of my grad courses at Drexel; to say the least, I viewed it through a much different lens this time.  

Forward thinking in education.  I dig it.

Sam Harris explains how science can lead us to an objective morality that fosters individual and collective well-being.  This talk is absolutely genius.

http://www.ted.com/talks/sam_harris_science_can_show_what_s_right.html