Exactly _what_ is scary about not knowing? That if the ocean currents suddenly change, hundreds of millions of people could die. none of the variables involve

Exactly _what_ is scary about not knowing? That if the ocean currents suddenly change, hundreds of millions of people could die. none of the variables involved is out of the "normal" range for the last 3000 years That's a lie. Probably justifiable by a really bad definition of "normal". Would you say we are at a "normal" range of CO2, historically? http://en.wikipedia.org/wiki/Image:Carbon_Dioxide_400kyr.png http://en.wikipedia.org/wiki/Image:Carbon_Dioxide_400kyr.png