Utube - Interesting

This Is Water - David Foster Wallace Commencement Speech

https://www.youtube.com/watch?v=8CrOL-ydFMI&feature=youtu.be

The History of Urbanization, 3700 BC - 2000 AD

https://www.youtube.com/watch?v=yKJYXujJ7sU&feature=youtu.be