Arctic and sub-Arctic environment, climate and biodiversity is changing in ways unprecedented in our long histories in the north, challenging traditional ways of life, wellbeing, food security, constitutes a legitimate concern for the future of traditional indigenous livelihoods. This session will provide an updated documentation of the concept Arctic indigenous peoples traditional knowledge aiming to increase international collaboration in education and research in the Arctic. All available knowledge should be used to develop new governance system of the Arctic, including Arctic indigenous peoples traditional knowledge. We believe indigenous peoples traditional knowledge will bring sustainable science in future. Traditional knowledge is a systematic way of thinking and knowing that is elaborated and applied to phenomena across biological, physical, cultural and linguistic systems. Traditional knowledge is owned by the holders of that knowledge, often collectively, and is uniquely expressed and transmitted through indigenous languages. It is a body of knowledge generated through cultural practices, lived experiences including extensive and multigenerational observations, lessons and skills. It has been developed and verified over millennia and is still developing in a living process, including knowledge acquired today and in the future, and it is passed on from generation to generation. Recently the Arctic States signed the Agreement on enhancing international Arctic Scientific cooperation in Fairbanks May 11 2017. The agreement included traditional knowledge as "Scientific Activities" and furthermore article 11 include traditional and local knowledge: The session will include indigenous experts and researcher to critically discuss article 11 in the Arctic science agreement and how the concept of indigenous peoples traditional knowledge can further be evaluated and developed prior to the Arctic Science Ministerial meeting in Berlin. These session aim to 1) prepare knowledge background presentations about use of traditional knowledge in sustainable development in the Arctic and 2) hold an Arctic Lavvu Dialogue about traditional knowledge and arctic Science cooperation and 3) hold an event: UArctic competition in lassoing with Arctic food . The session will be hold in cooperation with Horizon 2020 project INTERACT WP9, and Association of World Reindeer Herders (WR).