The ITACUS speech to the ITA General Assembly during WTC 2017 in Bergen has been published. In the absence of the ITACUS Chair, the speech was delivered by the ITACUS Vice Chair Antonia Cornaro. This annual presentation to the General Assembly highlights ITACUS activities and delivers its vision on the future of underground space. It is also a call to action to all Member Nations in the light of the challenges the world is facing, specifically on climate change mitigation and adaptation.