Future challenges: general discussion. (1st April 2015) - Jemmis, E. D.; Aravamudhan, Sankarampadi; Arunan, Elangannan; Shahi, Abhishek; Hunt, Neil; Schnedermann, Christoph; Helliwell, John R.; Ashfold, Mike; Prabal Goswami, Himangshu; Nenov, Artur; Deckert, Volker; Roy Chowdhury, Priyadarshi; et al.