Any time that you hear someone say, "we need to get beyond debate and act," it usually means they are no longer willing to listen to others and they just want to implement their solution.
But this is one of the necessary differences between science and politics. Politics requires making decisions, and acting on them, based on imperfect information. There's nothing wrong with saying "I know we don't have 100% certainty on this issue, but even at a level of only 80% certainty, the expected cost of doing nothing is so great, compared to the cost of taking action, that we're better off taking action."
The cost of acting in the way that some people want could do extensive damage to our economy and could have very little effect on the problem that they are attempting to solve. If individuals feel that there are things that should be done, they are free to start implementing themselves and working with business to make the case. It is only when people assume that the government has to force everyone to do what they want is it a question of what everyone agrees on. You don't need complete consensus if you are willing to put your money where your mouth is.