Please note that this is from a thesis project called OMG Space, possibly the best-named thesis project ever.
Professor Carolin Crawford- Quasars: the Brightest Black Holes
Quasars are among the most dramatic objects anywhere in the cosmos. They emit prodigious amounts of energy, all due to a supermassive black hole at the heart of a galaxy. Visible far across the Universe, quasars can be used to trace both the early life of galaxies, and the properties of the intervening space.
The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/quasars-%E2%80%93-the-brightest-black-holes
Duration: 58:48
via Gresham College.

