More videos from talks at the Institute of Astronomy’s open nights. This talk deals with the so-called fine-tuning of the universe. Here’s the youtube blurb:
Let’s make a new universe. Let’s make it slightly different from the one that we are familiar with. We could change the laws of nature, just a little bit. We could change how the universe begins, or make it four-dimensional. In the last 30 years, scientists have discovered something astounding: the vast majority of these changes are disastrous. We end up with a universe containing no galaxies, no stars, no planets, no atoms, no molecules, and most importantly, no intelligent life-forms wondering what went wrong. This fact is called the fine-tuning of the universe for life.
Parts 2-5 of the talk can be found by going to the youtube page.
Enjoy!
Letters to Nature 
Thanks, Luke. I’ve read about that argument before, but it’s nice to see it presented by an astronomer in person.