Scientists who questioned mankind's impact on climate change have received death threats and claim to have been shunned by the scientific community.
They say the debate on global warming has been "hijacked" by a powerful alliance of politicians, scientists and environmentalists who have stifled all questioning about the true environmental impact of carbon dioxide emissions.
Timothy Ball, a former climatology professor at the University of Winnipeg in Canada, has received five deaths threats by email since raising concerns about the degree to which man was affecting climate change.
One of the emails warned that, if he continued to speak out, he would not live to see further global warming.
You'd think that people who consider anthropogenic global