> communicate to the public as a single body, not as individual scientists

That's a laudable goal. You will never, never get any body of scientists, or any other class of people, to agree on their overall goals for society, so if science IS indeed political, you've lost already.

On the other hand, if they only have to agree on what the data and logic tell us, that's still hard, but it's much closer to being achievable. It requires everyone to take a deep breath and say "I might be wrong but this is what I think, and here's why." And then listen.