 In 1967, the Norwegian Society for the Conservation of Nature (NNV) had announced that they wanted a youth organization, and the two organisations, Norsk Feltbiologisk Ungdomsforening (NFU) and Oslo Katedralskoles Naturvernforening, decided to merge on November 18, 1967.The organisation had a difficult start with few members and a complicated organization, but in the 1970s, NU got better organised with more local groups.Focus in this period was agriculture.