In this presentation from the 2002 TED Conference, science journalist Stephen Petranek lists the 10 most likely ways the world could end suddenly. That sounds depressing, but there are things we can do about most of them. And we can always, um, colonize another planet.
Anyway, this is a good reminder to live life to its fullest—now.
Rivers Are Damp 
All right, if I’m getting back on the horse with posting, you have to do the same.
Ok, fair enough. You guilted me into it. 🙂