Several climate change scientists at the Australian National University in Canberra have been subjected to a campaign of death threats.
The ABC reports several have been moved to a more secure location after receiving the threats over their research.
Vice-chancellor Professor Ian Young said large numbers of emails, including death threats and abusive phone calls, had been received threatening to attack the academics in the street if they continue their research.
He says it had been happening for the past six months and the situation has worsened significantly in recent weeks.
''Obviously climate research is an emotive issue at the present time,'' said Professor Young.
''These are issues where we should have a logical public debate and it's completely intolerable that people be subjected to this sort of abuse and to threats like this.''
The ABC reports the Australian Federal Police is aware of the issue, but no investigation is underway.