"Just because energy (mainly coal and oil) companies don't like the policy implications of climate science and are willing to pay lots of people to speak ill of it, shouldn't make it a politicized science."

It seems as though energy companies have an incentive to downplay science that provides justification for limiting CO2, but don't scientists with government funding have incentive to play up science that provides justification for an increase in government power? How could we find out the magnitude of there effects without actually understanding the research ourselves?