UN News Centre: The world cannot afford escalating disasters of the kind recently witnessed in Pakistan and Russia, the top United Nations climate change official said today, underscoring the need for governments to take swift action to lead the world towards a low-carbon future. Flooding in Pakistan and wildfires in Russia were ?so dramatic? that many other major weather disasters in other parts of the world ?were relegated as secondary news,? Christina Figueres, Executive Secretary of the UN …