Recommendation: FORA TV

For your learning pleasure, and for an excellent teaching tool, I recommend Fora tv.

FORA.tv was founded in 2005 and is funded by a select group of investors including William R. Hearst III and Adobe Ventures. It advertises itself as having "the web's largest collection of unmediated video drawn from live events, lectures, and debates." It posts lectures from "the world's top universities, think tanks and conferences" and makes it available for "anyone to watch, interact with, and share --when, where, and how they want."

There is a fantastic collection of over sixty food law & policy lectures, over a hundred on agriculture.