PROBLEM 1: Housing shortages Housing shortages, worsened by social inequalities, gentrification and tourism. Subtopics: Enhanced social inequalities Rent Cap   Reference: https://www.expansion.com/inmobiliario/2024/01/08/659b29d7e5fdeaa6368b459a.html Reference: https://theconversation.com/el-caso-de-barcelona-demuestra-que-la-conquista-del-urbanismo-verde-no-es-facil-pero-sera-inevitable-166439…