TED Talk: Dark Matter & Dark Energy

I was doing a little research on Dark Matter today after reading a really interesting paragraph in Michio Kaku's book: Parallel Worlds.

"Our solar system orbits around the black hole at the center of the Milky Way galaxy at 220 kilometers per second. As a result, our planet is passing through a considerable amount of dark matter. Physicists estimate that a billion dark matter particles flow through every square meter of our world every second, including through our bodies."

Here is a TED Talk I ran into on the subject: