?Great acceleration? refers to the exponential growth of the use of natural resources, especially in the Global South, by human societies, especially in the Global North, from the mid-twentieth century onwards. This socio-environmental transition is indicated by the use of soy: Between 1961 and 2016, world soy production grew more than twelve-fold. With regard to gross production value in 2016, soybeans ranked third, behind rice and wheat, among field crops at the global level. During these decades, the gravity center of soy production and export shifted from the Global North to the Global South, more precisely, from the USA to the ?Soybean Republic? (Brazil, Argentina, Paraguay etc.). However, soy emerged as a global commodity already in the early twentieth century, as China ? nowadays the world?s major importer ? became the major exporter. Against this backdrop, the era of ?great acceleration? can be regarded as ?soyacene?, in which expansions of soy frontiers became major drivers of socio-environmental changes. The panel addresses expansions of soy production in their spatio-temporal contexts from multiple angles: how they were driven by political and economic forces; how they were contested among different actors; how they changed people?s access to resources and labor relations; how they involved transnational transfers of people, capital and technology; how they altered soy?s role in socio-technical networks; how they linked to global commodity chains of food, feed and fuels; how they affected (and often disrupted) the lives of human and non-human organisms; how they might be organized in a more sustainable way in the future. All in all, soy provides a lens to socio-environmental relations at multiple scales in the era of ?great acceleration?.