So more than half the average american population does not know that the earth is covered in 70% water?
why is this surprising at all? I mean it's not on "american idol" or "dancing with the starts". It's not a song in "rock band". You can't play it on the wii or playstation or xbox. You can't know this from facebook or myspace or twitter. There is'nt an action movie about it.
So of course America does'nt know or care what the earth is covered in
This is the average man that we are talking about who has an IQ of a 100 (not that memorizing a fact requires intelligence, only paying attention in school)
I bet that the average IQ of all the people on slashdot is upwards of 120. (mine is 120)