Dr. Marc D’Iorio is the Assistant Deputy Minister of the Science and Technology Branch in Environment and Climate Change Canada. The Branch is the Canada’s leader in environmental science including atmospheric and climate modelling, aquatics ecosystems and long-term water quality monitoring, wildlife and landscape science, and chemical risk assessment. Science advice generated by the Branch informs policy, regulations, and operations. Dr. D’Iorio began his career as a post-doctoral fellow in climate change.  Throughout his public service career, he has worked in a number of positions as a scientist, a manager, and a leader of organizations that conduct research, fund science, or use science to make policy and regulatory decisions. Marc D’Iorio is Canada’s Focal Point on the Intergovernmental Panel on Climate Change and Canada’s Permanent Representative to the Inter-American Institute for Global Change Research; coordinating Canada’s participation in the IAI.