A ban on nuclear weapons is 70 years overdue. Upload images to Instagram using the hashtag #goodbyenukes and they will appear below. They could be of vigils and other activities to mark the 70th anniversaries of the atomic bombings (6 and 9 August 2015). Or simply post a photo of a paper crane. Why not leave one on the train or bus on your way to work or school with the hashtag #goodbyenukes on its wings?