Yes, that's a great question.
With any industry there is always going to be some impact. The question is what level of impact is acceptable to society. How we come to a decision on what is and what isn't acceptable is a challenge.
I've worked in conjunction with a number of different industries and I've always been impressed with how responsive they are to public perception issues, for obvious reasons. Very often, they are willing to get involved to find out what the nature of the problem is so they can be part of the solution.
What is the best way to move forward? Industries develop with time, as markets change and technology changes. I think we need to be careful not to completely stifle things, but at the same time be reasonable in terms of the environmental impact. I think the main thing is that if we don't know what the impact is, then it's very difficult to decide what should be regulated. First of all, I think a lot more has to be learned about the baseline conditions. So often there is so little data and if you don't know what the baseline is, it's very difficult to try to infer what the effect of any industry is.