She is the author of two books about the UN’s Intergovernmental Panel on Climate Change (IPCC). Described by Germany’s Der Spiegel as the IPCC’s “sharpest critic”, Donna has testified about the IPCC before a committee of the British House of Commons, and addressed audiences in Berlin, Brisbane, Calgary, Edinburgh, Erice (Sicily), London, Mannheim, Melbourne, Munich, Oslo, Perth, Sydney, Toronto, and Warsaw. Donna is a former columnist, editorial board member, and feature writer for Canada’s National Post newspaper.