Not as much as I would like. Often scientists are asked to give expert opinions and write reports suggesting how to fix certain problems, however, once they get into the hands of politicians, the issues and solutions are often distorted for political gain. I wish politicians would pay more attention to what scientists say on global affairs.
I agree with Sean. Although, scientists are often on advisory panels, their advice is not always taken despite the evidence they present. Unfortunately, this is how politics works… There are many agendas in politics. Scientists advice about climate change is an obvious example of this.