@maxdancona,
The interesting question is about scientific literacy.
Scientific literacy understanding scientific process. It means being able to read an experiment in any field and understand what metrics are used and what confidence the levels are. It means having a trust for scientific institutions (since we can't all be experts in everything). And it means being able to accept scientific fact as objective, the data is what it is regardless of how it impacts any ideology or political position.
It also means being able to understand and develop rational response to risk. As an example where the American public failed at scientific literacy, take the Ebola Crisis where everyone wanted to shut down borders and imprison nurses for what the scientific facts indicated was a negligible risk.
Americans in general are not scientifically literate. Americans will use their existing beliefs to process popular science reports (which in my opinion are usually atrocious).
Science supports peoples existing narrative rather than challenges it.
So, consider a scientifically literate person, one who has a scientific education but no deep knowledge in the field. How does this person look at the conflicting information that is available in any of these issues including climate change, vaccines and GMOs.
Sure, I am open to reading papers that disagree with consensus. I know how to read a paper and I know how they are put together. But my education is in Physics, I have no expertise in medicine or evolution or meteorology (although Physics is a little more relevant here).
I feel that scientific consensus, as determined by our large reputable scientific institutions, should be trusted. This puts the scientific decisions in the hands of the people actually doing the research. There are always dissenters on any issue, particularly in this age of the internet, but when a scientific consensus has been proven generally trustworthy.
You are wrong about your tobacco example. See
http://cebp.aacrjournals.org/content/16/6/1070.full
The tobacco companies were arguing against the scientific consensus that had already form that smoking caused cancer. The research on tobacco causing cancer started in the 1920s, and the research continued through the 1930s and 1940s where there were many papers being published on the topic. By 1957 the surgeon general had already stated plainly that smoking caused cancer. The tobacco companies ran a well-funded campaign against what was a scientific consensus that smoking causes cancer.
The tobacco case is another example where the scientific consensus that smoking causes cancer was right. Since the 1920s there was never a scientific consensus from reputable scientific organizations that smoking was safe.
Since the 1940s a scientifically literate American listening to reputable scientific organizations would have known the truth about the link between smoking and cancer.