George Tanski, Helena Bergstedt, Alexandre Bevington, Philip Bonnaventure, Frederic Bouchard, Caroline Coch, Simon Dumais, Alevtina Evgrafova, Oliver W. Frauenfeld, Jennifer Frederick, Michael Fritz, Denis Frolov, Silvie Harder, Ingo Hartmeyer, Joanne Heslop, Elin Hoegstroem, Margareta Johansson, Gleb Kraev, Elena Kuznetsova, Josefine Lenz, Alexey Lupachev, Florence Magnin, Jannik Martens, Alexey Maslakov, Anne Morgenstern, Alexandre Nieuwendam, Marc Oliva, Boris Radosavljevi, Justine Lucille Ramage, Andrea Schneider, Julia Stanilovskaya, Jens Strauss, Erin Trochim, Daniel J. Vecellio, Samuel Weber, Hugues Lantuit

• A lasting legacy of the International Polar Year (IPY) 2007–2008 was the promotion of the Permafrost Young Researchers Network (PYRN), initially an IPY outreach and education activity by the International Permafrost Association (IPA). With the momentum of IPY, PYRN developed into a thriving network that still connects young permafrost scientists, engineers, and researchers from other disciplines. This research note summarises (1) PYRN’s development since 2005 and the IPY’s role, (2) the first 2015 PYRN census and survey results, and (3) PYRN’s future plans to improve international and interdisciplinary exchange between young researchers. The review concludes that PYRN is an established network within the polar research community that has continually developed since 2005. PYRN’s successful activities were largely fostered by IPY. With >200 of the 1200 registered members active and engaged, PYRN is capitalising on the availability of social media tools and rising to meet environmental challenges while maintaining its role as aA lasting legacy of the International Polar Year (IPY) 2007–2008 was the promotion of the Permafrost Young Researchers Network (PYRN), initially an IPY outreach and education activity by the International Permafrost Association (IPA). With the momentum of IPY, PYRN developed into a thriving network that still connects young permafrost scientists, engineers, and researchers from other disciplines. This research note summarises (1) PYRN’s development since 2005 and the IPY’s role, (2) the first 2015 PYRN census and survey results, and (3) PYRN’s future plans to improve international and interdisciplinary exchange between young researchers. The review concludes that PYRN is an established network within the polar research community that has continually developed since 2005. PYRN’s successful activities were largely fostered by IPY. With >200 of the 1200 registered members active and engaged, PYRN is capitalising on the availability of social media tools and rising to meet environmental challenges while maintaining its role as a successful network honouring the legacy of IPY.…