I found the 3/4 of scientists debunking global warming comment interesting, so I took a look into it.  It seems you are quoting a survey of American citizens that showed 3/4 (more accuratly 71%) questioned the effect of mankind on global warming.  To be clear, not scientists, just regular folks.  You should really be more careful when you post these kind of things.  We are paid to read things carefully.

There is a good read on the generally accepted scientific feel about the impact of mankind on global warming at www.ipcc.ch.  It is a bit long with a lot of charts and such, but pretty interesting reading.