Professor Ian Chubb wants politicians to consider compelling evidence that human activity has adversely affected the climate through global warming.
He says while it's important people have different views about climate science, there are concerns about the level of threats sent to those working in the field.
"Every time I think it's reached a low, we then go on and reach a new low," Professor Chubb has told ABC Television's Four Corners Program.
"And I think that's of very little benefits to us as we're trying to grapple with what is a very serious problem that needs serious discussion.
"I would urge politicians to look at all the evidence and to wonder why it might be that something like 32 national academies of science all around the world are all saying that it's very likely that human activity has adversely affected our climate through global warming." Read the full report here.
Source: Sydney Morning Herald.