1. Food security and climate change: 4 per 1000 initiative new tangible global challenges for the soil; Organized by Inra in collaboration with University of Poitiers, France 17th to 20th June 2019: The 4 per 1000 initiative was launched in 2015 as a global initiative to promote the adoption of economically viable and ecologically sound agricultural practices towards carbon sequestration and food security. Despite doubts in terms of feasibility and contribution to climate change mitigation, the soil remains at the heart of the political and socio-economic debate.The conference aims to build partnerships for soil sustainability and resilience, promote innovation and knowledge exchange, and ensure that appropriate solutions are put into practices under the framework of the 4 per 1000 initiative. For more information https://symposium.inra.fr/4p1000