Science deals in theories. Also, much of the funding for their research comes from, you guessed it, politicians.
http://www.nationalreview.com/article/414359/global-warming-follow-money-henry-payne
It does, but you seem to think a theory means unknown. Gravity is a theory, a theory is a framework that best explains the facts. there are facts, the globe heating is a fact, it has for a decade straight, the mechanism is the theory which explains this fact.
Dude the whole world agrees, every scientific community, it's not an American thing, you are not the center of the universe. The US is a plutocracy and reminds me of the hunger games.
If you are trolling fine, but at least try to listen to what I am saying. Politics suck, people lie I get it. Facts don't.
The theory of evolution is simply a theory to describe the facts seen, that is, animals that outcompete others pass on their genetic material, why there is so much diversity, why animals are adapted to their environments etc. these are facts that evolution explains and allows us to make predictions.
Your fear of science as you use a computer is baffling.