Partial Table of Contents: Climate impact on reindeer nomadism. Reindeer pasture use and land use change, Reindeer herders' traditional knowledge: codifying herders' adaptive knowledge. Reindeer herders' social and economic adaptation - institutions and governance as constraints and opportunities. Consequences of climate variability and change on reindeer. Welfare of reindeer and herds of reindeer - two ways of knowing. EALAT community based workshops in the Circumpolar North. Outreach of EALAT knowledge: the Reindeer Portal. Teaching, learning and building competence locally in reindeer herder' societies. IPY EALAT legacy. Vulnerability, resilience adaptive capacity in reindeer herders' society.