Public Policy Polling had a little fun and released a poll on popular conspiracy theories.

It is absolutely amazing what some people believe. For example:

37% of voters believe global warming is a hoax, 51% do not. Republicans say global warming is a hoax by a 58-25 margin, Democrats disagree 11-77, and Independents are more split at  41-51. 61% of Romney voters believe global warming is a hoax

6% of voters believe Osama bin Laden is still alive

21% of voters say a UFO crashed in Roswell, NM in 1947 and the US government covered it up. More Romney voters (27%) than Obama voters (16%) believe in a UFO coverup

28% of voters believe secretive power elite with a globalist agenda is conspiring to eventually rule the world through an authoritarian world government, or New World Order.  A plurality of Romney voters (38%) believe in the New World Order compared to 35% who don't

28% of voters believe Saddam Hussein was involved in the 9/11 attacks.  36% of Romney voters believe Saddam Hussein was involved in 9/11, 41% do not

20% of voters believe there is a link between childhood vaccines and autism, 51% do not

7% of voters think the moon landing was faked

13% of voters think Barack Obama is the anti-Christ, including 22% of Romney voters

Voters are split 44%-45% on whether Bush intentionally misled about weapons of mass destruction in Iraq. 72% of Democrats think Bush lied about WMDs, Independents agree 48-45, just 13% of Republicans think so

29% of voters believe aliens exist

14% of voters say the CIA was instrumental in creating the crack cocaine epidemic in America's inner cities in the 1980's

9% of voters think the government adds fluoride to our water supply for sinister reasons (not just dental health)

4% of voters say they believe "lizard people" control our societies by gaining political power

51% of voters say a larger conspiracy was at work in the JFK assassination, just 25% say Oswald acted alone

14% of voters believe in Bigfoot

15% of voters say the government or the media adds mind-controlling technology to TV broadcast signals (the so-called Tinfoil Hat crowd)

5% believe exhaust seen in the sky behind airplanes is actually chemicals sprayed by the government for sinister reasons

15% of voters think the medical industry and the pharmaceutical industry "invent" new diseases to make money

Just 5% of voters believe that Paul McCartney actually died in 1966

11% of voters believe the US government allowed 9/11 to happen, 78% do not agree

Global warming may not be happening, but a hoax? That presupposes hundreds of scientists deliberately falsifying data. They may be, as many skeptics claim, to be reading the data incorrectly, but risking their careers to fake it? Not very likely.

A couple of these I had never heard. Jet contrails a government plot? Wow. Lizard people? Where did that one come from? Did people take the TV mini-series "V" as news?

Good to see the flouride conspiracy theory dying. That was very big among the Birchers in the 50's.

Many African Americans believe in the conspiracy theory that the CIA helped create the crack epidemic in the US in order to kill blacks, but it's good to see most others don't.

The 5% that believe McCartney died in 1966 can't shake the "Paul is dead" craze that swept the world in the late 60's. Play the end of "Strawberry Fields" backward and it sounds like someone - John Lennon say conspiracists - saying "I buried Paul."  Lennon admitted later that he actually said "cranberry sauce."

It's fascinating to see what people will believe if they lack critical thinking skills.