We already do. Past Reserves are used to fund land-related projects such as:  - Land reclamation, including polders (which are part of climate change measures).  - Creation of underground space like the Jurong Rock Cavern. - Land acquisition projects like HDBs SERS (Selective En-bloc Redevelopment Scheme).  Past Reserves can be used for these purposes as the reserves are essentially converted back into land and the asset is preserved.