The only problem with this is that a large percentage of voters, at least in the US, are dead set against nuclear power, and the politicians are more concerned about appeasing them and garnering their votes than they are in actually DOING something about the issue.
Sure, big business and corporate hacks don't like making changes, especially if they might affect the bottom line. So you can't entirely trust them. And politicians will say whatever the polls agree is the right thing to say, regardless of what the truth is. And let's be honest: a lot of them are bought and paid for before they ever get into office. So, while there's no guarantee that any particular scientist might not have an agenda, when a large number of apparently unrelated scientists tell you that things are not necessarily what they seem to be, you have to at least admit that they might be right!
Let's face it, you would have to be a fool not to admit that global warming is occurring. But there is far to much uncertainty out there to determine how much of it is caused by man. Some of it, certainly. But there have been warming cycles in the past which were definitely NOT caused by man. There have also been ice ages, also not caused by man. There are natural processes out there which we are barely beginning to recognize, much less understand, which tend to counterbalance much of the changes which are occurring.
So do what you feel is right. Promote nuclear power, drive cleaner vehicles, turn off your air conditioner. Just don't do it because some numbnuts politician is trying to scare you to death.