science on stage europe is organised in a bottom-up structure. the basis is the science on stage community in the participating countries. each country has a national steering committee (nsc). the nscs get together in the science on stage assembly and elect the executive board. the board is supported by invited experts and by the science on stage europe office in berlin. the science on stage international festivals take place every two years, as the culmination of all the national science on stage activities. the festivals are organised jointly by a european festival programme committee and a national organising committee.