It is an irony that when the world leaders are discussing climate change issues in Paris, we are witnessing a nature’s fury in Chennai. The floods caused by incessant and unprecedented rains exposed the pitfalls of our conception of urban development. The administrative and disaster management machinery was completely off guard despite warnings. The positive side is that common people and voluntary organisations have exhibited remarkable zeal of bravery and companionship. Armed forces, as usual, turned out to be the ultimate saviours. Why Chennai faced this situation? What are the natural and man-made causes? What is the extent of economic loss? Who can came forward to help out the distressed? And most importantly what lessons we should learn from this disaster to save the future of humanity? These are the key questions Organiser addresses in this special coverage of #ChennaiFloods.