If you were not discouraged enough with life on earth last night, you should have tuned into “Last Days on Earth” on ABC’s 20/20. I was watching U.S. Open tennis, but I kept switching back to ABC and watching pieces of this program during changeovers.

It was an enjoyable 2 hours full of doom and gloom, with scientists weighing in on what catastrophic events could lie in our future and how the world might end. It featured your favorite end-of-days possibilities - asteroids hitting the earth, plagues such as avian flu, supervolcanos, the earth being sucked into a black hole, and, of course, climate change. There seemed to be very little optimism among these men and women. Most of these events, they say, would end life altogether, and in some cases destroy the planet. And in some of the scenarios, we would be helpless to prevent it.

If you missed the program last night, have no fear (well, not yet, anyway) - you can order it on DVD and anytime you feel just a little too merry, just pop it in and depress the hell out of yourself.