The international conference “Permafrost in XXI Сentury: Basic and Applied Researches” was held on 27-30 Sept. 2015 in Pushchino, at the Institute of Physicoсhemical and Biological Problems in Soil Science RAS. The main topics of the conference were the following issues and research trends: “Permafrost Response to Climat Change”, “Permafrost Engineering and Hazards”, “Hydrology and Hydrogeology of Permafrost”, “Geophysical and Remote Sensing Data in Permafrost Investigations” and others.