On 12 December 2016, Ineke Malsch gave an overview of international initiatives stimulating dialogue on nanotechnology for water and energy, during the 1st BALEWARE conference in Arusha, Tanzania (www.baleware.org). Reasons for dialogue on science and technology include economic, democratic, societal and ethical concerns. She mentioned a.o. how NANO2ALL (www.nano2all.eu) aims to contribute to a worldwide discussion and shape the future of nanotechnologies. Nanotechnologies could contribute to the United Nations Sustainable Development Goals on Water and Energy (2015-2030), but may also introduce new risks and unintended consequences. Dialogue is one way to contribute to responsible research and innovation.