Yvo de Boer, KPMG Climate Change & Sustainability Special Global Adviser, who was once United Nations Climate Change Framework Agreement Top Level Secretary, exchanged views with the notable persons of the business world, within the framework of the visit he paid on 5 November 2013 to Istanbul. Boer shared his assessments in terms of the severe weather events that undermine the business activities and supply chains in the entire world and rise of the climate change issue to the upper levels on the agendas of the company board of directors.