What to do when...you happen to be surrounded by pessimistic people?

Ok…so I know it’s helpful to keep up on current events and to plan for possible outcomes of current happenings that will affect me, but…

People I know have gone to the next (and the next) level. If I hear about FEMA, RFID, the Apocalypse, or the “fact” that Obama is really an alien out to destroy us all one more time, I will throw my ipod at the wall.

I’ve done my research…and I have concluded these “out there” theories lack concrete evidence. Of course, the people around me still hold true and blue…and it’s affecting me in negative ways. I find myself pondering on a dark future more than ever, among other things.

Finally, these are people I have no choice but to be around (like students, professors, fellow co-workers etc). So, does anyone have any advice on how to survive in a conspiracy theorist’s haven? I would love to finish my term with my nerves and sanity intact, but that’s looking a bit doubtful at this point.