Today's facepalm

Keith Olbermann just mocked, justifiably, a state congresswoman who when talking about uranium mining in her state that "the earth has been here for 6,000 years". Olbermann went on to point out that one of the reasons we know the earth is billions of years old is because of dating using uranium decay rates. So far so good, Keith. But then he added that this was "carbon dating", blah blah blah...

*facepalm*

Really, Keith? We use uranium to do carbon dating? Guess again. To do carbon dating, we use... wait for it........ carbon! sigh.